diff --git a/Gemfile b/Gemfile
index 8911af8..105d873 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,7 @@ gem "rubocop-performance", "~> 1.3"
 gem "rubocop-jekyll", "~> 0.11.0"
 gem 'rubycritic', '~> 4.3', '>= 4.3.1'
 gem "inch", "~> 0.8.0"
-gem "rdoc", "~> 6.2"
+gem "rdoc", "~> 6.3"
 gem "pry", "~> 0.12.2"
 
 gem "git", "~> 1.5"
diff --git a/Gemfile.lock b/Gemfile.lock
index 9a4237f..1f92765 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     rainbow (3.0.0)
     rake (13.0.1)
     rchardet (1.8.0)
-    rdoc (6.2.1)
+    rdoc (6.3.2)
     reek (5.6.0)
       codeclimate-engine-rb (~> 0.4.0)
       kwalify (~> 0.7.0)
@@ -225,7 +225,7 @@ DEPENDENCIES
   os (~> 1.0)
   pry (~> 0.12.2)
   rake (~> 13.0)
-  rdoc (~> 6.2)
+  rdoc (~> 6.3)
   rubocop (~> 0.69.0)
   rubocop-jekyll (~> 0.11.0)
   rubocop-performance (~> 1.3)