diff --git a/docs/Gemfile b/docs/Gemfile
index f144584eff350..b8b411addb97c 100644
--- a/docs/Gemfile
+++ b/docs/Gemfile
@@ -20,7 +20,7 @@ gem 'rb-fsevent'
 gem 'sanitize', '~>2.0'
 
 # Markdown
-gem 'redcarpet'
+gem 'redcarpet', '>= 3.5.1'
 
 # Syntax highlighting
 gem 'pygments.rb'
diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index bd775465628be..a22bd4699acf4 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
     rb-fsevent (0.9.7)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
-    redcarpet (3.3.4)
+    redcarpet (3.5.1)
     rouge (1.11.1)
     safe_yaml (1.0.4)
     sanitize (2.1.0)
@@ -63,8 +63,8 @@ DEPENDENCIES
   pygments.rb
   rake
   rb-fsevent
-  redcarpet
+  redcarpet (>= 3.5.1)
   sanitize (~> 2.0)
 
 BUNDLED WITH
-   1.11.2
+   1.17.3