diff --git a/gnu/local.mk b/gnu/local.mk
index 5c1144e1b9..76bf1f792f 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1013,7 +1013,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/ruby-concurrent-ignore-broken-test.patch	\
   %D%/packages/patches/ruby-concurrent-test-arm.patch		\
   %D%/packages/patches/ruby-2.2.7-rubygems-2613-ruby22.patch	\
-  %D%/packages/patches/ruby-2.3.4-rubygems-2613-ruby23.patch	\
   %D%/packages/patches/ruby-rack-ignore-failing-test.patch      \
   %D%/packages/patches/ruby-tzinfo-data-ignore-broken-test.patch\
   %D%/packages/patches/rxvt-unicode-escape-sequences.patch	\
diff --git a/gnu/packages/patches/ruby-2.3.4-rubygems-2613-ruby23.patch b/gnu/packages/patches/ruby-2.3.4-rubygems-2613-ruby23.patch
deleted file mode 100644
index 8f4758293e..0000000000
--- a/gnu/packages/patches/ruby-2.3.4-rubygems-2613-ruby23.patch
+++ /dev/null
@@ -1,355 +0,0 @@
-diff --git lib/rubygems.rb lib/rubygems.rb
-index 04031c765c..9c0219ce06 100644
---- ruby-2.3.4/lib/rubygems.rb
-+++ ruby-2.3.4/lib/rubygems.rb
-@@ -10,7 +10,7 @@
- require 'thread'
- 
- module Gem
--  VERSION = '2.5.2'
-+  VERSION = '2.5.2.1'
- end
- 
- # Must be first since it unloads the prelude from 1.9.2
-diff --git lib/rubygems/commands/query_command.rb lib/rubygems/commands/query_command.rb
-index d6196b44ed..61e9808860 100644
---- ruby-2.3.4/lib/rubygems/commands/query_command.rb
-+++ ruby-2.3.4/lib/rubygems/commands/query_command.rb
-@@ -226,7 +226,7 @@ def output_versions output, versions
-         end
-       end
- 
--      output << make_entry(matching_tuples, platforms)
-+      output << clean_text(make_entry(matching_tuples, platforms))
-     end
-   end
- 
-@@ -344,7 +344,8 @@ def spec_platforms entry, platforms
-   end
- 
-   def spec_summary entry, spec
--    entry << "\n\n" << format_text(spec.summary, 68, 4)
-+    summary = truncate_text(spec.summary, "the summary for #{spec.full_name}")
-+    entry << "\n\n" << format_text(summary, 68, 4)
-   end
- 
- end
-diff --git lib/rubygems/installer.rb lib/rubygems/installer.rb
-index 85358e0d1a..709b77d126 100644
---- ruby-2.3.4/lib/rubygems/installer.rb
-+++ ruby-2.3.4/lib/rubygems/installer.rb
-@@ -693,6 +693,11 @@ def verify_gem_home(unpack = false) # :nodoc:
-       unpack or File.writable?(gem_home)
-   end
- 
-+  def verify_spec_name
-+    return if spec.name =~ Gem::Specification::VALID_NAME_PATTERN
-+    raise Gem::InstallError, "#{spec} has an invalid name"
-+  end
-+
-   ##
-   # Return the text for an application file.
- 
-@@ -812,6 +817,8 @@ def pre_install_checks
- 
-     ensure_loadable_spec
- 
-+    verify_spec_name
-+
-     if options[:install_as_default]
-       Gem.ensure_default_gem_subdirectories gem_home
-     else
-diff --git lib/rubygems/remote_fetcher.rb lib/rubygems/remote_fetcher.rb
-index fda1e067ef..254bebfadf 100644
---- ruby-2.3.4/lib/rubygems/remote_fetcher.rb
-+++ ruby-2.3.4/lib/rubygems/remote_fetcher.rb
-@@ -104,7 +104,7 @@ def api_endpoint(uri)
-     else
-       target = res.target.to_s.strip
- 
--      if /\.#{Regexp.quote(host)}\z/ =~ target
-+      if URI("http://" + target).host.end_with?(".#{host}")
-         return URI.parse "#{uri.scheme}://#{target}#{uri.path}"
-       end
- 
-diff --git lib/rubygems/specification.rb lib/rubygems/specification.rb
-index 8e2557cdb2..dd4fde1776 100644
---- ruby-2.3.4/lib/rubygems/specification.rb
-+++ ruby-2.3.4/lib/rubygems/specification.rb
-@@ -108,6 +108,8 @@ class Gem::Specification < Gem::BasicSpecification
- 
-   private_constant :LOAD_CACHE if defined? private_constant
- 
-+  VALID_NAME_PATTERN = /\A[a-zA-Z0-9\.\-\_]+\z/ # :nodoc:
-+
-   # :startdoc:
- 
-   ##
-@@ -2665,9 +2667,15 @@ def validate packaging = true
-       end
-     end
- 
--    unless String === name then
-+    if !name.is_a?(String) then
-       raise Gem::InvalidSpecificationException,
--            "invalid value for attribute name: \"#{name.inspect}\""
-+            "invalid value for attribute name: \"#{name.inspect}\" must be a string"
-+    elsif name !~ /[a-zA-Z]/ then
-+      raise Gem::InvalidSpecificationException,
-+            "invalid value for attribute name: #{name.dump} must include at least one letter"
-+    elsif name !~ VALID_NAME_PATTERN then
-+      raise Gem::InvalidSpecificationException,
-+            "invalid value for attribute name: #{name.dump} can only include letters, numbers, dashes, and underscores"
-     end
- 
-     if raw_require_paths.empty? then
-diff --git lib/rubygems/text.rb lib/rubygems/text.rb
-index 732f1b99f2..b944b62c27 100644
---- ruby-2.3.4/lib/rubygems/text.rb
-+++ ruby-2.3.4/lib/rubygems/text.rb
-@@ -6,13 +6,26 @@
- 
- module Gem::Text
- 
-+  ##
-+  # Remove any non-printable characters and make the text suitable for
-+  # printing.
-+  def clean_text(text)
-+    text.gsub(/[\000-\b\v-\f\016-\037\177]/, ".".freeze)
-+  end
-+
-+  def truncate_text(text, description, max_length = 100_000)
-+    raise ArgumentError, "max_length must be positive" unless max_length > 0
-+    return text if text.size <= max_length
-+    "Truncating #{description} to #{max_length.to_s.reverse.gsub(/...(?=.)/,'\&,').reverse} characters:\n" + text[0, max_length]
-+  end
-+
-   ##
-   # Wraps +text+ to +wrap+ characters and optionally indents by +indent+
-   # characters
- 
-   def format_text(text, wrap, indent=0)
-     result = []
--    work = text.dup
-+    work = clean_text(text)
- 
-     while work.length > wrap do
-       if work =~ /^(.{0,#{wrap}})[ \n]/ then
-diff --git test/rubygems/test_gem_commands_query_command.rb test/rubygems/test_gem_commands_query_command.rb
-index 78c15a1770..9ec715492f 100644
---- ruby-2.3.4/test/rubygems/test_gem_commands_query_command.rb
-+++ ruby-2.3.4/test/rubygems/test_gem_commands_query_command.rb
-@@ -116,6 +116,86 @@ def test_execute_details
-     This is a lot of text. This is a lot of text. This is a lot of text.
-     This is a lot of text.
- 
-+pl (1)
-+    Platform: i386-linux
-+    Author: A User
-+    Homepage: http://example.com
-+
-+    this is a summary
-+    EOF
-+
-+    assert_equal expected, @ui.output
-+    assert_equal '', @ui.error
-+  end
-+
-+  def test_execute_details_cleans_text
-+    spec_fetcher do |fetcher|
-+      fetcher.spec 'a', 2 do |s|
-+        s.summary = 'This is a lot of text. ' * 4
-+        s.authors = ["Abraham Lincoln \x01", "\x02 Hirohito"]
-+        s.homepage = "http://a.example.com/\x03"
-+      end
-+
-+      fetcher.legacy_platform
-+    end
-+
-+    @cmd.handle_options %w[-r -d]
-+
-+    use_ui @ui do
-+      @cmd.execute
-+    end
-+
-+    expected = <<-EOF
-+
-+*** REMOTE GEMS ***
-+
-+a (2)
-+    Authors: Abraham Lincoln ., . Hirohito
-+    Homepage: http://a.example.com/.
-+
-+    This is a lot of text. This is a lot of text. This is a lot of text.
-+    This is a lot of text.
-+
-+pl (1)
-+    Platform: i386-linux
-+    Author: A User
-+    Homepage: http://example.com
-+
-+    this is a summary
-+    EOF
-+
-+    assert_equal expected, @ui.output
-+    assert_equal '', @ui.error
-+  end
-+
-+  def test_execute_details_truncates_summary
-+    spec_fetcher do |fetcher|
-+      fetcher.spec 'a', 2 do |s|
-+        s.summary = 'This is a lot of text. ' * 10_000
-+        s.authors = ["Abraham Lincoln \x01", "\x02 Hirohito"]
-+        s.homepage = "http://a.example.com/\x03"
-+      end
-+
-+      fetcher.legacy_platform
-+    end
-+
-+    @cmd.handle_options %w[-r -d]
-+
-+    use_ui @ui do
-+      @cmd.execute
-+    end
-+
-+    expected = <<-EOF
-+
-+*** REMOTE GEMS ***
-+
-+a (2)
-+    Authors: Abraham Lincoln ., . Hirohito
-+    Homepage: http://a.example.com/.
-+
-+    Truncating the summary for a-2 to 100,000 characters:
-+#{"    This is a lot of text. This is a lot of text. This is a lot of text.\n" * 1449}    This is a lot of te
-+
- pl (1)
-     Platform: i386-linux
-     Author: A User
-diff --git test/rubygems/test_gem_installer.rb test/rubygems/test_gem_installer.rb
-index 5ec71d0a01..1092a0c68f 100644
---- ruby-2.3.4/test/rubygems/test_gem_installer.rb
-+++ ruby-2.3.4/test/rubygems/test_gem_installer.rb
-@@ -1227,6 +1227,26 @@ def test_pre_install_checks_wrong_rubygems_version
-     end
-   end
- 
-+  def test_pre_install_checks_malicious_name
-+    spec = util_spec '../malicious', '1'
-+    def spec.full_name # so the spec is buildable
-+      "malicious-1"
-+    end
-+    def spec.validate; end
-+
-+    util_build_gem spec
-+
-+    gem = File.join(@gemhome, 'cache', spec.file_name)
-+
-+    use_ui @ui do
-+      @installer = Gem::Installer.at gem
-+      e = assert_raises Gem::InstallError do
-+        @installer.pre_install_checks
-+      end
-+      assert_equal '#<Gem::Specification name=../malicious version=1> has an invalid name', e.message
-+    end
-+  end
-+
-   def test_shebang
-     util_make_exec @spec, "#!/usr/bin/ruby"
- 
-diff --git test/rubygems/test_gem_remote_fetcher.rb test/rubygems/test_gem_remote_fetcher.rb
-index 49b6b6656c..a3919c8ef2 100644
---- ruby-2.3.4/test/rubygems/test_gem_remote_fetcher.rb
-+++ ruby-2.3.4/test/rubygems/test_gem_remote_fetcher.rb
-@@ -253,6 +253,21 @@ def test_api_endpoint_ignores_trans_domain_values_that_end_with_original
-     dns.verify
-   end
- 
-+  def test_api_endpoint_ignores_trans_domain_values_that_end_with_original_in_path
-+    uri = URI.parse "http://example.com/foo"
-+    target = MiniTest::Mock.new
-+    target.expect :target, "evil.com/a.example.com"
-+
-+    dns = MiniTest::Mock.new
-+    dns.expect :getresource, target, [String, Object]
-+
-+    fetch = Gem::RemoteFetcher.new nil, dns
-+    assert_equal URI.parse("http://example.com/foo"), fetch.api_endpoint(uri)
-+
-+    target.verify
-+    dns.verify
-+  end
-+
-   def test_api_endpoint_timeout_warning
-     uri = URI.parse "http://gems.example.com/foo"
- 
-diff --git test/rubygems/test_gem_specification.rb test/rubygems/test_gem_specification.rb
-index bc1c8d2ca7..9a49bbbf59 100644
---- ruby-2.3.4/test/rubygems/test_gem_specification.rb
-+++ ruby-2.3.4/test/rubygems/test_gem_specification.rb
-@@ -2974,7 +2974,37 @@ def test_validate_name
-       @a1.validate
-     end
- 
--    assert_equal 'invalid value for attribute name: ":json"', e.message
-+    assert_equal 'invalid value for attribute name: ":json" must be a string', e.message
-+
-+    @a1.name = []
-+    e = assert_raises Gem::InvalidSpecificationException do
-+      @a1.validate
-+    end
-+    assert_equal "invalid value for attribute name: \"[]\" must be a string", e.message
-+
-+    @a1.name = ""
-+    e = assert_raises Gem::InvalidSpecificationException do
-+      @a1.validate
-+    end
-+    assert_equal "invalid value for attribute name: \"\" must include at least one letter", e.message
-+
-+    @a1.name = "12345"
-+    e = assert_raises Gem::InvalidSpecificationException do
-+      @a1.validate
-+    end
-+    assert_equal "invalid value for attribute name: \"12345\" must include at least one letter", e.message
-+
-+    @a1.name = "../malicious"
-+    e = assert_raises Gem::InvalidSpecificationException do
-+      @a1.validate
-+    end
-+    assert_equal "invalid value for attribute name: \"../malicious\" can only include letters, numbers, dashes, and underscores", e.message
-+
-+    @a1.name = "\ba\t"
-+    e = assert_raises Gem::InvalidSpecificationException do
-+      @a1.validate
-+    end
-+    assert_equal "invalid value for attribute name: \"\\ba\\t\" can only include letters, numbers, dashes, and underscores", e.message
-   end
- 
-   def test_validate_non_nil
-diff --git test/rubygems/test_gem_text.rb test/rubygems/test_gem_text.rb
-index a6e22e04da..04f3f605e8 100644
---- ruby-2.3.4/test/rubygems/test_gem_text.rb
-+++ ruby-2.3.4/test/rubygems/test_gem_text.rb
-@@ -36,6 +36,10 @@ def test_format_text_trailing # for two spaces after .
-     assert_equal expected, format_text(text, 78)
-   end
- 
-+  def test_format_removes_nonprintable_characters
-+    assert_equal "text with weird .. stuff .", format_text("text with weird \x1b\x02 stuff \x7f", 40)
-+  end
-+
-   def test_min3
-     assert_equal 1, min3(1, 1, 1)
-     assert_equal 1, min3(1, 1, 2)
-@@ -74,4 +78,11 @@ def test_levenshtein_distance_replace
-     assert_equal 7, levenshtein_distance("xxxxxxx", "ZenTest")
-     assert_equal 7, levenshtein_distance("zentest", "xxxxxxx")
-   end
-+
-+  def test_truncate_text
-+    assert_equal "abc", truncate_text("abc", "desc")
-+    assert_equal "Truncating desc to 2 characters:\nab", truncate_text("abc", "desc", 2)
-+    s = "ab" * 500_001
-+    assert_equal "Truncating desc to 1,000,000 characters:\n#{s[0, 1_000_000]}", truncate_text(s, "desc", 1_000_000)
-+  end
- end
diff --git a/gnu/packages/ruby.scm b/gnu/packages/ruby.scm
index d6ed15d681..8adc836672 100644
--- a/gnu/packages/ruby.scm
+++ b/gnu/packages/ruby.scm
@@ -126,7 +126,7 @@ a focus on simplicity and productivity.")
 (define-public ruby-2.3
   (package
     (inherit ruby)
-    (version "2.3.4")
+    (version "2.3.5")
     (source
      (origin
        (method url-fetch)
@@ -135,9 +135,8 @@ a focus on simplicity and productivity.")
                            "/ruby-" version ".tar.xz"))
        (sha256
         (base32
-         "132p5kc1sx97svbx04g40pz5pr7p8f6jlmnq5r2prlcz5q1xj71l"))
+         "1npzcnq5kh0f9y88w5gj4v6ln8csr91361k3r43dmhlhn6mpsfkx"))
        (modules '((guix build utils)))
-       (patches (search-patches "ruby-2.3.4-rubygems-2613-ruby23.patch"))
        (snippet `(begin
                    ;; Remove bundled libffi
                    (delete-file-recursively "ext/fiddle/libffi-3.2.1")