diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index d9b08efc4c..c9563a16ed 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -470,7 +470,7 @@ connection alive.")
          (bind-minor-version "9")
          (bind-patch-version "9")
          (bind-release-type "-P")         ; for patch release, use "-P"
-         (bind-release-version "3")      ; for patch release, e.g. "4"
+         (bind-release-version "4")      ; for patch release, e.g. "4"
          (bind-version (string-append bind-major-version
                                       "."
                                       bind-minor-version
@@ -480,14 +480,14 @@ connection alive.")
                                       bind-release-version)))
     (package
       (name "isc-dhcp")
-      (version "4.3.4")
+      (version "4.3.5")
       (source (origin
                 (method url-fetch)
                 (uri (string-append "http://ftp.isc.org/isc/dhcp/"
                                     version "/dhcp-" version ".tar.gz"))
                 (sha256
                  (base32
-                  "0zk0imll6bfyp9p4ndn8h6s4ifijnw5bhixswifr5rnk7pp5l4gm"))))
+                  "0m7rwxvpb7xrmfl9ynpckhl0hi0xgm9bq1fmbp2r68sxy5mr75gb"))))
       (build-system gnu-build-system)
       (arguments
        `(#:parallel-build? #f
@@ -586,7 +586,7 @@ connection alive.")
                                         "/bind-" bind-version ".tar.gz"))
                     (sha256
                      (base32
-                      "1qlii6syr491yjn6kpyqknlvbsrkwlsqa0grmmfbq1g3471fyfyn"))))
+                      "1qpi23lrs6jfxqx8dakbqfyg3hvrzq5ldchg6my19xcvx8515mgx"))))
 
                 ;; When cross-compiling, we need the cross Coreutils and sed.
                 ;; Otherwise just use those from %FINAL-INPUTS.