diff --git a/docs/Gemfile b/docs/Gemfile
index 6af58b18..08e23c5c 100644
--- a/docs/Gemfile
+++ b/docs/Gemfile
@@ -11,4 +11,4 @@ gem 'redcarpet', '~> 3.5.1'
 gem 'rouge', '~> 3.20'
 gem 'sass'
 
-gem "webrick", "~> 1.7"
+gem "webrick", "~> 1.8"
diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 555e8eae..91ac7e0e 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
       thread_safe (~> 0.1)
     uglifier (3.2.0)
       execjs (>= 0.3.0, < 3)
-    webrick (1.7.0)
+    webrick (1.8.2)
 
 PLATFORMS
   ruby
@@ -131,7 +131,7 @@ DEPENDENCIES
   redcarpet (~> 3.5.1)
   rouge (~> 3.20)
   sass
-  webrick (~> 1.7)
+  webrick (~> 1.8)
 
 RUBY VERSION
    ruby 2.3.3p222