diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 15f35009a9..90dd69cfa3 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -1215,15 +1215,15 @@ command.")
 (define-public tzdata
   (package
     (name "tzdata")
-    (version "2019a")
+    (version "2019b")
     (source (origin
              (method url-fetch)
              (uri (string-append
-                   "https://www.iana.org/time-zones/repository/releases/tzdata"
+                   "https://data.iana.org/time-zones/releases/tzdata"
                    version ".tar.gz"))
              (sha256
               (base32
-               "0wlpqm4asvi0waaz24xj20iq40gqfypmb4nldjhkfgm09bgnsdlh"))))
+               "0r0clnlslwm15m1c61dinf1fi9ffgl6aipng7i7yryfwj0n0kn85"))))
     (build-system gnu-build-system)
     (arguments
      '(#:tests? #f
@@ -1269,11 +1269,11 @@ command.")
     (inputs `(("tzcode" ,(origin
                           (method url-fetch)
                           (uri (string-append
-                                "http://www.iana.org/time-zones/repository/releases/tzcode"
+                                "https://data.iana.org/time-zones/releases/tzcode"
                                 version ".tar.gz"))
                           (sha256
                            (base32
-                            "1x9z8fpgnhzlsnps0hamb54ymaskjab7ys9m4i4gpk9hpiig2fc7"))))))
+                            "0vbmswvv3li25s31shyllq5v24449lxnrki9hr043nipjd09sirf"))))))
     (home-page "https://www.iana.org/time-zones")
     (synopsis "Database of current and historical time zones")
     (description "The Time Zone Database (often called tz or zoneinfo)
@@ -1296,7 +1296,7 @@ and daylight-saving rules.")
      (source (origin
               (method url-fetch)
               (uri (string-append
-                    "https://www.iana.org/time-zones/repository/releases/tzdata"
+                    "https://data.iana.org/time-zones/releases/tzdata"
                     version ".tar.gz"))
               (sha256
                (base32
@@ -1305,7 +1305,7 @@ and daylight-saving rules.")
        `(("tzcode" ,(origin
                      (method url-fetch)
                      (uri (string-append
-                           "http://www.iana.org/time-zones/repository/releases/tzcode"
+                           "http://data.iana.org/time-zones/releases/tzcode"
                            version ".tar.gz"))
                      (sha256
                       (base32
diff --git a/gnu/packages/certs.scm b/gnu/packages/certs.scm
index ee8815d522..c41870332c 100644
--- a/gnu/packages/certs.scm
+++ b/gnu/packages/certs.scm
@@ -76,7 +76,7 @@
 (define-public nss-certs
   (package
     (name "nss-certs")
-    (version "3.44")
+    (version "3.44.1")
     (source (origin
               (method url-fetch)
               (uri (let ((version-with-underscores
@@ -87,7 +87,7 @@
                       "nss-" version ".tar.gz")))
               (sha256
                (base32
-                "1zvabgxlyvz3fnv4w89y4a5qkscjmm88naf929dgvvgfnrchwqm5"))))
+                "1y0jvva4s3j7cjz22kqw2lsml0an1295bgpc2raf7kc9r60cpr7w"))))
     (build-system gnu-build-system)
     (outputs '("out"))
     (native-inputs
diff --git a/gnu/packages/check.scm b/gnu/packages/check.scm
index dae2b0e1d9..085538b2de 100644
--- a/gnu/packages/check.scm
+++ b/gnu/packages/check.scm
@@ -2062,18 +2062,17 @@ create data based on random numbers and yet remain repeatable.")
 (define-public python-freezegun
   (package
     (name "python-freezegun")
-    (version "0.3.11")
+    (version "0.3.12")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "freezegun" version))
        (sha256
-        (base32 "1nh0fzqjwg88n57k3qa8mxnmiwrr7lqyd5xvc96qn5g8zcxv8fg8"))))
+        (base32 "1rx57v8ryjncjimg8hys9kx1r3rknvwcl4y340g20jn0sf69qk9a"))))
     (build-system python-build-system)
     (native-inputs
      `(("python-mock" ,python-mock)
-       ("python-nose" ,python-nose)
-       ("python-coverage" ,python-coverage)))
+       ("python-pytest" ,python-pytest)))
     (propagated-inputs
      `(("python-six" ,python-six)
        ("python-dateutil" ,python-dateutil)))
@@ -2084,7 +2083,7 @@ create data based on random numbers and yet remain repeatable.")
          ;; package does not include the Makefile.
          (replace 'check
            (lambda _
-             (invoke "nosetests" "./tests/"))))))
+             (invoke "pytest" "-vv"))))))
     (home-page "https://github.com/spulec/freezegun")
     (synopsis "Test utility for mocking the datetime module")
     (description
diff --git a/gnu/packages/cups.scm b/gnu/packages/cups.scm
index b48da35e8e..b87203cab6 100644
--- a/gnu/packages/cups.scm
+++ b/gnu/packages/cups.scm
@@ -57,7 +57,7 @@
 (define-public cups-filters
   (package
     (name "cups-filters")
-    (version "1.23.0")
+    (version "1.25.0")
     (source(origin
               (method url-fetch)
               (uri
@@ -65,7 +65,7 @@
                               "cups-filters-" version ".tar.xz"))
               (sha256
                (base32
-                "1lyzxf03kdfvkbb6p7hxlarbb35lq5bh094g49v3bz9z4z9065p2"))
+                "1laiscq8yvynw862calkgbz9irrdkmd5l821q6a6wik1ifd186c1"))
               (modules '((guix build utils)))
               (snippet
                ;; install backends, banners and filters to cups-filters output
diff --git a/gnu/packages/databases.scm b/gnu/packages/databases.scm
index 8e4a3ff814..4e2db8ed44 100644
--- a/gnu/packages/databases.scm
+++ b/gnu/packages/databases.scm
@@ -806,14 +806,14 @@ as a drop-in replacement of MySQL.")
 (define-public postgresql
   (package
     (name "postgresql")
-    (version "10.8")
+    (version "10.9")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://ftp.postgresql.org/pub/source/v"
                                   version "/postgresql-" version ".tar.bz2"))
               (sha256
                (base32
-                "0pfdmy4w95b49w9rkn8dwvzmi2brpqfvbxd04y0k0s0xvymc565i"))
+                "0m0gbf7nwgag6a1z5f9xszwzgf2xhx0ncakyxwxlzs87n1zk32wm"))
               (patches (search-patches "postgresql-disable-resolve_symlinks.patch"))))
     (build-system gnu-build-system)
     (arguments
diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 4b37ffdf3c..d77d6c58c4 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -152,14 +152,14 @@ freedesktop.org project.")
 (define-public libinput
   (package
     (name "libinput")
-    (version "1.13.2")
+    (version "1.13.4")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://freedesktop.org/software/libinput/"
                                   "libinput-" version ".tar.xz"))
               (sha256
                (base32
-                "0vbapc90m49n0z8w8w4v0qf1iiwaixw9h79jfmps9pj8hdls17qx"))))
+                "07a0w7rak7rvnh6g4j0akwjxwinxfszc1xi9mrx12fv82k3mgsyk"))))
     (build-system meson-build-system)
     (arguments
      `(#:configure-flags '("-Ddocumentation=false")))
diff --git a/gnu/packages/gl.scm b/gnu/packages/gl.scm
index 99d2ec6cdb..9ed043c7ae 100644
--- a/gnu/packages/gl.scm
+++ b/gnu/packages/gl.scm
@@ -46,6 +46,7 @@
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages video)
+  #:use-module (gnu packages vulkan)
   #:use-module (gnu packages xdisorg)
   #:use-module (gnu packages xml)
   #:use-module (gnu packages xorg)
@@ -223,7 +224,7 @@ also known as DXTn or DXTC) for Mesa.")
 (define-public mesa
   (package
     (name "mesa")
-    (version "19.0.4")
+    (version "19.1.1")
     (source
       (origin
         (method url-fetch)
@@ -235,7 +236,7 @@ also known as DXTn or DXTC) for Mesa.")
                                   version "/mesa-" version ".tar.xz")))
         (sha256
          (base32
-          "0iyffj3xd7f0vsayirswh6aia37ba26hkihpz273hxwd8hpz7y9r"))
+          "10amy5sdmpjbskr3xazgk0jyli8xpgi0y1nsmjr76hx8nhb4n4bj"))
         (patches
          (search-patches "mesa-skip-disk-cache-test.patch"))))
     (build-system meson-build-system)
@@ -269,6 +270,13 @@ also known as DXTn or DXTC) for Mesa.")
       `(("bison" ,bison)
         ("flex" ,flex)
         ("gettext" ,gettext-minimal)
+        ,@(match (%current-system)
+            ((or "x86_64-linux" "i686-linux")
+             `(("glslang" ,glslang)
+               ("vulkan-headers" ,vulkan-headers)
+               ("vulkan-loader" ,vulkan-loader)))
+            (_
+             `()))
         ("pkg-config" ,pkg-config)
         ("python" ,python)
         ("python-mako" ,python-mako)
@@ -305,6 +313,13 @@ also known as DXTn or DXTC) for Mesa.")
              (_
               '("-Dvulkan-drivers=auto")))
 
+         ;; Enable the Vulkan overlay layer on i686-linux and x86-64-linux.
+         ,@(match (%current-system)
+             ((or "x86_64-linux" "i686-linux")
+              '("-Dvulkan-overlay-layer=true"))
+             (_
+              '()))
+
          ;; Also enable the tests.
          "-Dbuild-tests=true"
 
diff --git a/gnu/packages/glib.scm b/gnu/packages/glib.scm
index d75b963794..ab9ed0b1bf 100644
--- a/gnu/packages/glib.scm
+++ b/gnu/packages/glib.scm
@@ -491,7 +491,7 @@ by GDBus included in Glib.")
 (define libsigc++
   (package
     (name "libsigc++")
-    (version "2.10.1")
+    (version "2.10.2")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/libsigc++/"
@@ -499,7 +499,7 @@ by GDBus included in Glib.")
                                  name "-" version ".tar.xz"))
              (sha256
               (base32
-               "00v08km4wwzbh6vjxb21388wb9dm6g2xh14rgwabnv4c2wk5z8n9"))))
+               "163s14d1rqp82gc1vsm3q0wzsbdicb9q6307kz0zk5lm6x9h5jmi"))))
     (build-system gnu-build-system)
     (native-inputs `(("pkg-config" ,pkg-config)
                      ("m4" ,m4)))
diff --git a/gnu/packages/gtk.scm b/gnu/packages/gtk.scm
index 3f835f51e5..6f37e5e8ca 100644
--- a/gnu/packages/gtk.scm
+++ b/gnu/packages/gtk.scm
@@ -732,7 +732,7 @@ application suites.")
    (name "gtk+")
    ;; NOTE: When updating the version of 'gtk+', the hash of 'mate-themes' in
    ;;       mate.scm will also need to be updated.
-   (version "3.24.8")
+   (version "3.24.9")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnome/sources/" name "/"
@@ -740,7 +740,7 @@ application suites.")
                                 name "-" version ".tar.xz"))
             (sha256
              (base32
-              "16f71bbkhwhndcsrpyhjia3b77cb5ksf5c45lyfgws4pkgg64sb6"))
+              "0dg6jf2763sp740ls6b5y86b5b9zhz3zj0sbmar2xpws1lkv0zjp"))
             (patches (search-patches "gtk3-respect-GUIX_GTK3_PATH.patch"
                                      "gtk3-respect-GUIX_GTK3_IM_MODULE_FILE.patch"))))
    (outputs '("out" "bin" "doc"))
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index d3ff27412f..17fddc1965 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -2686,7 +2686,7 @@ library, including the ability to split random number generators.")
 (define-public ghc-primitive
   (package
     (name "ghc-primitive")
-    (version "0.6.3.0")
+    (version "0.6.4.0")
     (outputs '("out" "doc"))
     (source
      (origin
@@ -2697,7 +2697,7 @@ library, including the ability to split random number generators.")
              ".tar.gz"))
        (sha256
         (base32
-         "0mcmbnj08wd6zfwn7xk6zf5hy5zwbla5v78pw0dpymqg9s0gzpnd"))))
+         "0r0cda7acvplgwaxy69kviv4jp7kkfi038by68gj4yfx4iwszgjc"))))
     (build-system haskell-build-system)
     (home-page
      "https://github.com/haskell/primitive")
diff --git a/gnu/packages/imagemagick.scm b/gnu/packages/imagemagick.scm
index 7c09594b88..39fcf61a12 100644
--- a/gnu/packages/imagemagick.scm
+++ b/gnu/packages/imagemagick.scm
@@ -48,14 +48,14 @@
     ;; The 7 release series has an incompatible API, while the 6 series is still
     ;; maintained. Don't update to 7 until we've made sure that the ImageMagick
     ;; users are ready for the 7-series API.
-    (version "6.9.10-46")
+    (version "6.9.10-51")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://imagemagick/ImageMagick-"
                                  version ".tar.xz"))
              (sha256
               (base32
-               "1qx3x48q1dy39g1bb8mnyaq9jwy1smf0x6zfly4r0mj3m01i2dyb"))))
+               "03c5r14ycp7mmlk6pryfcnpvjjnghk3z7dbjd1b7m1bgzmw21jhj"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags '("--with-frozenpaths" "--without-gcc-arch")
diff --git a/gnu/packages/nss.scm b/gnu/packages/nss.scm
index 83f4431c2b..40a8002954 100644
--- a/gnu/packages/nss.scm
+++ b/gnu/packages/nss.scm
@@ -70,7 +70,7 @@ in the Mozilla clients.")
 (define-public nss
   (package
     (name "nss")
-    (version "3.44")
+    (version "3.44.1")
     (source (origin
               (method url-fetch)
               (uri (let ((version-with-underscores
@@ -81,7 +81,7 @@ in the Mozilla clients.")
                       "nss-" version ".tar.gz")))
               (sha256
                (base32
-                "1zvabgxlyvz3fnv4w89y4a5qkscjmm88naf929dgvvgfnrchwqm5"))
+                "1y0jvva4s3j7cjz22kqw2lsml0an1295bgpc2raf7kc9r60cpr7w"))
               ;; Create nss.pc and nss-config.
               (patches (search-patches "nss-pkgconfig.patch"
                                        "nss-increase-test-timeout.patch"))))
diff --git a/gnu/packages/onc-rpc.scm b/gnu/packages/onc-rpc.scm
index 64887212d3..8f66b07527 100644
--- a/gnu/packages/onc-rpc.scm
+++ b/gnu/packages/onc-rpc.scm
@@ -23,6 +23,7 @@
   #:use-module (guix licenses)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix git-download)
   #:use-module (gnu packages)
   #:use-module (gnu packages autotools)
   #:use-module (gnu packages gettext)
@@ -33,7 +34,7 @@
 (define-public libtirpc
   (package
     (name "libtirpc")
-    (version "1.0.3")
+    (version "1.1.4")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://sourceforge/libtirpc/libtirpc/"
@@ -41,7 +42,7 @@
                                   version ".tar.bz2"))
               (sha256
                (base32
-                "0ppxl3k3nsz0qdakq844i2kj4fvh9h937lhx26bgmpmxq67sghw6"))))
+                "07anqypf7c719x9y683qz65cxllmzlgmlab2hlahrqcj4bq2k99c"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
@@ -105,13 +106,14 @@ universal addresses.")
     (name "libnsl")
     (version "1.2.0")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/thkukuk/libnsl/archive/v"
-                                  version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/thkukuk/libnsl.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1y6kmxmv1difzvdhx7grqzw0j2v2b74mg4kjb803m8jcgkqqx8m5"))))
+                "1chzqhcgh0yia9js8mh92cmhyka7rh32ql6b3mgdk26n94dqzs8b"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("autoconf" ,autoconf)
diff --git a/gnu/packages/perl.scm b/gnu/packages/perl.scm
index d0df091494..9ab7c37a24 100644
--- a/gnu/packages/perl.scm
+++ b/gnu/packages/perl.scm
@@ -9588,7 +9588,7 @@ MYMETA.yml.")
 (define-public perl-module-build
   (package
     (name "perl-module-build")
-    (version "0.4220")
+    (version "0.4229")
     (source
      (origin
        (method url-fetch)
@@ -9596,7 +9596,7 @@ MYMETA.yml.")
                            "Module-Build-" version ".tar.gz"))
        (sha256
         (base32
-         "18mm6k7d7cmj9l6na1c50vbc8hc1pwsz38yxi9x6ydlrwz3hf4pv"))))
+         "064c03wxia7jz0i578awj4srykj0nnigm4p5r0dv0559rnk93r0z"))))
     (build-system perl-build-system)
     (propagated-inputs
      `(("perl-cpan-meta" ,perl-cpan-meta)))
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 49d5126e02..29aebdf8aa 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -316,14 +316,14 @@ by @code{binstar}, @code{binstar-build} and @code{chalmers}.")
 (define-public python-babel
   (package
     (name "python-babel")
-    (version "2.6.0")
+    (version "2.7.0")
     (source
      (origin
       (method url-fetch)
       (uri (pypi-uri "Babel" version))
       (sha256
        (base32
-        "08rxmbx2s4irp0w0gmn498vns5xy0fagm0fg33xa772jiks51flc"))))
+        "0a7wawx8vsg7igvz6p3x909fskhg4b2y1910xk4f4c8y22p3aqg8"))))
     (build-system python-build-system)
     (native-inputs
      `(("python-freezegun" ,python-freezegun)
@@ -348,6 +348,18 @@ etc. ")
 (define-public python2-babel
   (package-with-python2 python-babel))
 
+;; Sphinx < 2.0 requires this version.  Remove once no longer needed.
+(define-public python2-babel-2.6
+  (package
+    (inherit python2-babel)
+    (version "2.6.0")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "Babel" version))
+              (sha256
+               (base32
+                "08rxmbx2s4irp0w0gmn498vns5xy0fagm0fg33xa772jiks51flc"))))))
+
 (define-public python2-backport-ssl-match-hostname
   (package
     (name "python2-backport-ssl-match-hostname")
@@ -2329,15 +2341,33 @@ e.g. filters, callbacks and errbacks can all be promises.")
 (define-public python-markupsafe
   (package
     (name "python-markupsafe")
-    (version "1.0")
+    (version "1.1.1")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "MarkupSafe" version))
        (sha256
         (base32
-         "0rdn1s8x9ni7ss8rfiacj7x1085lx8mh2zdwqslnw8xc3l4nkgm6"))))
+         "0sqipg4fk7xbixqd8kq6rlkxj664d157bdwbh93farcphf92x1r9"))))
     (build-system python-build-system)
+    (arguments
+     `(#:modules ((ice-9 ftw)
+                  (srfi srfi-1)
+                  (srfi srfi-26)
+                  (guix build utils)
+                  (guix build python-build-system))
+       #:phases (modify-phases %standard-phases
+                  (replace 'check
+                    (lambda _
+                      (let ((cwd (getcwd))
+                            (libdir (find (cut string-prefix? "lib." <>)
+                                          (scandir "build"))))
+                      (setenv "PYTHONPATH"
+                              (string-append cwd "/build/" libdir ":"
+                                             (getenv "PYTHONPATH")))
+                      (invoke "pytest" "-vv")))))))
+    (native-inputs
+     `(("python-pytest" ,python-pytest)))
     (home-page "https://github.com/mitsuhiko/markupsafe")
     (synopsis "XML/HTML/XHTML markup safe string implementation for Python")
     (description
@@ -2515,14 +2545,14 @@ reStructuredText.")
 (define-public python-pygments
   (package
     (name "python-pygments")
-    (version "2.4.0")
+    (version "2.4.2")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "Pygments" version))
        (sha256
         (base32
-         "1xb5n3hvhk63kxypc03k7kfry20pny6gygi4bsl9kw1rnzzsdjri"))))
+         "15v2sqm5g12bqa0c7wikfh9ck2nl97ayizy1hpqhmws5gqalq748"))))
     (build-system python-build-system)
     (arguments
      ;; FIXME: Tests require sphinx, which depends on this.
@@ -3153,14 +3183,14 @@ provides additional functionality on the produced Mallard documents.")
 (define-public python-cython
   (package
     (name "python-cython")
-    (version "0.29.7")
+    (version "0.29.11")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "Cython" version))
        (sha256
         (base32
-         "1s61hq2ikawxp6qvmkbfvvaxy9rqj67cddzwgcfc3dwi44b83l2m"))))
+         "1866m01ggl2h3rky4hac3m5p048gg4a0jb09ljkknryiqln54fkn"))))
     (build-system python-build-system)
     ;; we need the full python package and not just the python-wrapper
     ;; because we need libpython3.3m.so
@@ -4384,14 +4414,14 @@ a general image processing tool.")
 (define-public python-pycparser
   (package
     (name "python-pycparser")
-    (version "2.18")
+    (version "2.19")
     (source
      (origin
       (method url-fetch)
       (uri (pypi-uri "pycparser" version))
       (sha256
        (base32
-        "09mjyw82ibqzl449g7swy8bfxnfpmas0815d2rkdjlcqw81wma4r"))))
+        "1cr5dcj9628lkz1qlwq3fv97c25363qppkmcayqvd05dpy573259"))))
     (outputs '("out" "doc"))
     (build-system python-build-system)
     (native-inputs
@@ -4414,7 +4444,8 @@ a general image processing tool.")
                            (copy-file (string-append "." file)
                                       (string-append doc file)))
                          '("/README.rst" "/CHANGES" "/LICENSE"))
-               (copy-recursively "examples" examples)))))))
+               (copy-recursively "examples" examples)
+               #t))))))
     (home-page "https://github.com/eliben/pycparser")
     (synopsis "C parser in Python")
     (description
@@ -8704,14 +8735,14 @@ python-xdo for newer bindings.)")
 (define-public python-mako
   (package
     (name "python-mako")
-    (version "1.0.10")
+    (version "1.0.13")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "Mako" version))
        (sha256
         (base32
-         "0r9rysn19fmrxnzfcn7sg20kjhcrx9qri0my9n5vdzp1g2g92rbi"))))
+         "0h95n0g0k1jwxiqarr09navpfajarvbmpm8mhmw66c25qc675vlm"))))
     (build-system python-build-system)
     (propagated-inputs
      `(("python-markupsafe" ,python-markupsafe)))
diff --git a/gnu/packages/sphinx.scm b/gnu/packages/sphinx.scm
index 0a7fc9606a..5ec769388a 100644
--- a/gnu/packages/sphinx.scm
+++ b/gnu/packages/sphinx.scm
@@ -45,14 +45,14 @@
 (define-public python-sphinx
   (package
     (name "python-sphinx")
-    (version "2.0.1")
+    (version "2.1.2")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "Sphinx" version))
        (sha256
         (base32
-         "0js0rnbzm0nsb4gm2v4z79wlbmr05awqzic57kfl8ydkdxj80cj2"))))
+         "09y4mjmbxz94pmfr2lzf1hkx2xk0khcpb8xsqfmir4l7dds9x9zr"))))
     (build-system python-build-system)
     (arguments
      `(#:phases
@@ -132,7 +132,7 @@ sources.")
                            ("python2-imagesize" ,python2-imagesize)
                            ("python2-sphinx-alabaster-theme"
                             ,python2-sphinx-alabaster-theme)
-                           ("python2-babel" ,python2-babel)
+                           ("python2-babel" ,python2-babel-2.6)
                            ("python2-snowballstemmer" ,python2-snowballstemmer)
                            ("python2-docutils" ,python2-docutils)
                            ("python2-jinja2" ,python2-jinja2)
diff --git a/gnu/packages/textutils.scm b/gnu/packages/textutils.scm
index 79835e8578..d1dc14e6d7 100644
--- a/gnu/packages/textutils.scm
+++ b/gnu/packages/textutils.scm
@@ -140,32 +140,35 @@ libenca and several charset conversion libraries and tools.")
 (define-public utf8proc
   (package
     (name "utf8proc")
-    (version "2.1.1")
+    (version "2.4.0")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://github.com/JuliaLang/utf8proc/archive/v"
-             version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaStrings/utf8proc")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
        (sha256
-        (base32 "1cnpigrazhslw65s4j1a56j7p6d7d61wsxxjf1218i9mkwv2yw17"))))
+        (base32 "1i42hqwc8znqii9brangwkxk5cyc2lk95ip405fg88zr7z2ncr34"))))
     (build-system gnu-build-system)
-    (inputs                 ; test data that is otherwise downloaded with curl
+    (native-inputs           ;test data that is otherwise downloaded with curl
      `(("NormalizationTest.txt"
         ,(origin
            (method url-fetch)
-           (uri (string-append "http://www.unicode.org/Public/9.0.0/ucd/"
+           (uri (string-append "https://www.unicode.org/Public/12.1.0/ucd/"
                                "NormalizationTest.txt"))
            (sha256
-            (base32 "1fxrz0bilsbwl685336aqi88k62i6nqhm62rvy4zhg3bcm4dhj1d"))))
+            (base32 "0hb97k9xv1lr847hwz0719ksqy39s47xw6k01dgs1368jdibvawc"))))
        ("GraphemeBreakTest.txt"
         ,(origin
            (method url-fetch)
-           (uri (string-append "http://www.unicode.org/Public/9.0.0/ucd/"
+           (uri (string-append "https://www.unicode.org/Public/12.1.0/ucd/"
                                "auxiliary/GraphemeBreakTest.txt"))
            (sha256
-            (base32 "0qbhyhmf0778lc2hcwlpizrvmdxwpk959v2q2wb8abv09ba7wvn7"))))))
+            (base32 "0qc90ppmrwfn3y9cdn8jcjrn7qpdf0fhxkwh945yp4rvh37mbgcm"))))
+
+       ;; For tests.
+       ("perl" ,perl)))
     (arguments
      '(#:make-flags (list "CC=gcc"
                           (string-append "prefix=" (assoc-ref %outputs "out")))
@@ -180,8 +183,9 @@ libenca and several charset conversion libraries and tools.")
                        '("NormalizationTest.txt" "GraphemeBreakTest.txt"))
              (substitute* "data/GraphemeBreakTest.txt"
                (("÷") "/")
-               (("×") "+")))))))
-    (home-page "https://julialang.org/utf8proc/")
+               (("×") "+"))
+             #t)))))
+    (home-page "https://juliastrings.github.io/utf8proc/")
     (synopsis "C library for processing UTF-8 Unicode data")
     (description "utf8proc is a small C library that provides Unicode
 normalization, case-folding, and other operations for data in the UTF-8
diff --git a/gnu/packages/time.scm b/gnu/packages/time.scm
index a0c0824a92..9aad36e587 100644
--- a/gnu/packages/time.scm
+++ b/gnu/packages/time.scm
@@ -113,14 +113,14 @@ expressions.")
 (define-public python-pytz
   (package
     (name "python-pytz")
-    (version "2018.5")
+    (version "2019.1")
     (source
      (origin
       (method url-fetch)
       (uri (pypi-uri "pytz" version ".tar.gz"))
       (sha256
        (base32
-        "0xzj5gkpdn2da8m6j47chlp6zrzcypv9m0fjv4236q3jw4fyzfgz"))))
+        "0hg1r2c41gnmljdsdmdgy6kb1zkfmxsf49imd96g8znp4cyxsiyp"))))
     (build-system python-build-system)
     (home-page "http://pythonhosted.org/pytz")
     (synopsis "Python timezone library")
diff --git a/gnu/packages/tls.scm b/gnu/packages/tls.scm
index ea6dfda931..da2bfd5cad 100644
--- a/gnu/packages/tls.scm
+++ b/gnu/packages/tls.scm
@@ -643,14 +643,14 @@ certificates for free.")
 (define-public perl-net-ssleay
   (package
     (name "perl-net-ssleay")
-    (version "1.85")
+    (version "1.88")
     (source (origin
               (method url-fetch)
-              (uri (string-append "mirror://cpan/authors/id/M/MI/MIKEM/"
+              (uri (string-append "mirror://cpan/authors/id/C/CH/CHRISN/"
                                   "Net-SSLeay-" version ".tar.gz"))
               (sha256
                (base32
-                "1j5h4ycm8538397l204d2d5fkm9595aj174pj7bkpbhwzfwqi0cx"))))
+                "1pfgh4h3szcpvqlcimc60pjbk9zwls99x5863sva0wc47i4dl010"))))
     (build-system perl-build-system)
     (inputs `(("openssl" ,openssl)))
     (arguments
diff --git a/gnu/packages/vulkan.scm b/gnu/packages/vulkan.scm
index 6b151f0a31..9fb780de77 100644
--- a/gnu/packages/vulkan.scm
+++ b/gnu/packages/vulkan.scm
@@ -159,7 +159,7 @@ interpretation of the specifications for these languages.")
 (define-public vulkan-headers
   (package
     (name "vulkan-headers")
-    (version "1.1.107")
+    (version "1.1.112")
     (source
      (origin
        (method git-fetch)
@@ -169,7 +169,7 @@ interpretation of the specifications for these languages.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0kyf83n6fghqmjj5jbwhy08yq5sl598qnmw3kbavrnw9avqqm0c4"))))
+         "0iia2wlq38hvxwip6r3k5946ylrlk42fw50mhf0pdjxjh02p8zn5"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f))                    ; No tests.
@@ -193,7 +193,7 @@ interpretation of the specifications for these languages.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "1p64k9x5r7nsrs0cn6d61687xbajqvsm78xk6j85w9wfin5dxs30"))))
+         "1819bgmpjlikcc25bkmwwb7mp1rlyrq2v74wybg1g40ix70v0m0d"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f ;FIXME: 23/39 tests fail.  Try "tests/run_all_tests.sh".
@@ -203,6 +203,28 @@ interpretation of the specifications for these languages.")
            (lambda* (#:key inputs #:allow-other-keys)
              ;; Remove lines trying to build in a git commit id.
              (substitute* "CMakeLists.txt" ((".*spirv_tools_commit_id.h.*") ""))
+             #t))
+         ;; Make sure that the files needed for Mesa's Vulkan overlay are availabe.
+         (add-after 'unpack 'copy-headers1
+           (lambda* (#:key outputs #:allow-other-keys)
+             (install-file "tests/layers/vk_layer_data.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             (install-file "tests/layers/vk_layer_extension_utils.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             (install-file "loader/vk_loader_platform.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             #t))
+         (add-after 'build 'copy-headers2
+           (lambda* (#:key outputs #:allow-other-keys)
+             (install-file "vk_layer_dispatch_table.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             (install-file "vk_dispatch_table_helper.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
              #t)))
        #:configure-flags (list
                           "-DBUILD_TESTS=OFF" ; FIXME: Needs 'googletest' submodule.
@@ -244,7 +266,7 @@ and the ICD.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "1mak96jdg3wv043b4jxyv1fm2cz4nnallg0yb90my3yp5q64grrw"))))
+         "0an9hqvvpfmfld2pkszzwi7ccb9g2ijjqqzlj24dqg9kqnmcr3x4"))))
     (build-system cmake-build-system)
     (inputs
      `(("glslang" ,glslang)
diff --git a/gnu/packages/xdisorg.scm b/gnu/packages/xdisorg.scm
index 7c52b6d017..bd30fd2fd2 100644
--- a/gnu/packages/xdisorg.scm
+++ b/gnu/packages/xdisorg.scm
@@ -379,7 +379,7 @@ rasterisation.")
 (define-public libdrm
   (package
     (name "libdrm")
-    (version "2.4.98")
+    (version "2.4.99")
     (source
       (origin
         (method url-fetch)
@@ -389,7 +389,7 @@ rasterisation.")
                ".tar.bz2"))
         (sha256
          (base32
-          "150qdzsm2nx6dfacc75rx53anzsc6m31nhxidf5xxax3mk6fvq4b"))
+          "0pnsw4bmajzdbz8pk4wswdmw93shhympf2q9alhbnpfjgsf57gsd"))
         (patches (search-patches "libdrm-symbol-check.patch"))))
     (build-system meson-build-system)
     (arguments
diff --git a/gnu/packages/xiph.scm b/gnu/packages/xiph.scm
index 8f900cf90d..804cfd39a7 100644
--- a/gnu/packages/xiph.scm
+++ b/gnu/packages/xiph.scm
@@ -160,14 +160,14 @@ stereo encoding, and voice activity detection.")
 (define speexdsp
   (package
     (name "speexdsp")
-    (version "1.2rc3")
+    (version "1.2.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://downloads.xiph.org/releases/speex/"
                                   "speexdsp-" version ".tar.gz"))
               (sha256
                (base32
-                "1wcjyrnwlkayb20zdhp48y260rfyzg925qpjpljd5x9r01h8irja"))))
+                "0wa7sqpk3x61zz99m7lwkgr6yv62ml6lfgs5xja65vlvdzy44838"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags '(,@(if (string=? "aarch64-linux"
diff --git a/gnu/packages/xorg.scm b/gnu/packages/xorg.scm
index 7099745ab3..29b9010a99 100644
--- a/gnu/packages/xorg.scm
+++ b/gnu/packages/xorg.scm
@@ -3829,7 +3829,7 @@ extension to the X11 protocol.  It includes:
 (define-public xkeyboard-config
   (package
     (name "xkeyboard-config")
-    (version "2.26")
+    (version "2.27")
     (source
       (origin
         (method url-fetch)
@@ -3839,7 +3839,7 @@ extension to the X11 protocol.  It includes:
               ".tar.bz2"))
         (sha256
           (base32
-            "13h3381pfp4pv32189zkfsj2x0alr91xj6dqii76rl0c8v3ihdrr"))))
+            "07wh443lhwv1j0q6xnxnji7f7ahh7xphxj90fv02cdd6zv4aw3b9"))))
     (build-system gnu-build-system)
     (inputs
       `(("gettext" ,gettext-minimal)
@@ -5195,16 +5195,7 @@ draggable titlebars and borders.")
 (define-public xorg-server-for-tests
   (hidden-package
    (package
-     (inherit xorg-server)
-     (version "1.20.4")
-     (source (origin
-               (inherit (package-source xorg-server))
-               (uri (string-append
-                     "mirror://xorg/individual/xserver/"
-                     "xorg-server-" version ".tar.bz2"))
-               (sha256
-                (base32
-                 "1vk6j7hmigfill9x8m7a6vvgb3s50ji2yf6yprbgqfz9xf9x83zy")))))))
+     (inherit xorg-server))))
 
 (define-public xorg-server-xwayland
   (package