diff --git a/Gemfile b/Gemfile
index 8bfa48b2d..8b3c43cfb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 gem "bundler", ">= 1.5.0"
 
 gem "rails", "5.2.3"
-gem "rouge", "~> 3.3.0"
+gem "rouge", "~> 3.4.1"
 gem "request_store", "1.0.5"
 gem "mini_mime", "~> 1.0.1"
 gem "actionpack-xml_parser"
diff --git a/test/helpers/application_helper_test.rb b/test/helpers/application_helper_test.rb
index e5feebdd9..f46720120 100644
--- a/test/helpers/application_helper_test.rb
+++ b/test/helpers/application_helper_test.rb
@@ -1165,7 +1165,7 @@ document.write("Hello World!");
 RAW
 
     expected = <<-EXPECTED
-<pre><code class=\"ECMA_script syntaxhl\"><span class=\"cm\">/* Hello */</span><span class=\"nb\">document</span><span class=\"p\">.</span><span class=\"nx\">write</span><span class=\"p\">(</span><span class=\"s2\">\"Hello World!\"</span><span class=\"p\">);</span></code></pre>
+<pre><code class="ECMA_script syntaxhl"><span class="cm">/* Hello */</span><span class="nb">document</span><span class="p">.</span><span class="nx">write</span><span class="p">(</span><span class="dl">"</span><span class="s2">Hello World!</span><span class="dl">"</span><span class="p">);</span></code></pre>
 EXPECTED
 
     assert_equal expected.gsub(%r{[\r\n\t]}, ''), textilizable(raw).gsub(%r{[\r\n\t]}, '')
diff --git a/test/unit/lib/redmine/syntax_highlighting/rouge_test.rb b/test/unit/lib/redmine/syntax_highlighting/rouge_test.rb
index 5318cb85b..16387966c 100644
--- a/test/unit/lib/redmine/syntax_highlighting/rouge_test.rb
+++ b/test/unit/lib/redmine/syntax_highlighting/rouge_test.rb
@@ -39,7 +39,7 @@ print "Hello, world!\n";
 RAW_PERL
     expected_perl = <<'EXPECTED_PERL'
 <span class="c1">#!/usr/bin/perl</span>
-<span class="k">print</span> <span class="s">"Hello, world!\n"</span><span class="p">;</span>
+<span class="k">print</span> <span class="p">"</span><span class="s2">Hello, world!</span><span class="se">\n</span><span class="p">";</span>
 EXPECTED_PERL
     raw_prolog = <<'RAW_PROLOG'
 #!/usr/bin/swipl