diff --git a/Gemfile b/Gemfile
index d36007d..5f9a748 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ source "https://rubygems.org"
 group :development do
   gem 'rake', '< 13.0'
   gem "rspec", "< 4.0"
-  gem "rdoc", "~> 6.3.1"
+  gem "rdoc", "~> 6.3.2"
   gem "bundler", "~> 1.17.3"
   gem "jeweler", "~> 2.3.9"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 9c478a2..6195b0f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
     rack (2.2.3)
     rainbow (3.0.0)
     rake (12.3.3)
-    rdoc (6.3.1)
+    rdoc (6.3.2)
     rexml (3.2.5)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
@@ -96,7 +96,7 @@ DEPENDENCIES
   bundler (~> 1.17.3)
   jeweler (~> 2.3.9)
   rake (< 13.0)
-  rdoc (~> 6.3.1)
+  rdoc (~> 6.3.2)
   rspec (< 4.0)
   rubocop
   rubocop-checkstyle_formatter
diff --git a/graphite_client.gemspec b/graphite_client.gemspec
index 1eeae59..2da8e29 100644
--- a/graphite_client.gemspec
+++ b/graphite_client.gemspec
@@ -46,18 +46,18 @@ Gem::Specification.new do |s|
       s.add_development_dependency(%q<rake>, "< 14.0")
       #
       s.add_development_dependency(%q<rspec>, ["~> 2.99.0"])
-      s.add_development_dependency(%q<rdoc>, ["~> 6.0.4"])
+      s.add_development_dependency(%q<rdoc>, "~> 6.3.2")
       s.add_development_dependency(%q<bundler>, ["~> 1.16.1"])
       s.add_development_dependency(%q<jeweler>, ["~> 2.3.9"])
     else
       s.add_dependency(%q<rspec>, ["~> 2.11.0"])
-      s.add_dependency(%q<rdoc>, ["~> 3.12"])
+      s.add_dependency(%q<rdoc>, "~> 6.3.2")
       s.add_dependency(%q<bundler>, ["~> 1.2.0"])
       s.add_dependency(%q<jeweler>, ["~> 1.8.4"])
     end
   else
     s.add_dependency(%q<rspec>, ["~> 2.11.0"])
-    s.add_dependency(%q<rdoc>, ["~> 3.12"])
+    s.add_dependency(%q<rdoc>, "~> 6.3.2")
     s.add_dependency(%q<bundler>, ["~> 1.2.0"])
     s.add_dependency(%q<jeweler>, ["~> 1.8.4"])
   end