diff --git a/Gemfile b/Gemfile
index 99e5ef1..90f3083 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,4 +2,4 @@ source "https://rubygems.org"
 
 gem "github-pages", group: :jekyll_plugins
 
-gem "webrick", "~> 1.8"
+gem "webrick", "~> 1.9"
diff --git a/Gemfile.lock b/Gemfile.lock
index fea7df8..4a986c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -266,14 +266,14 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.1)
-    webrick (1.8.2)
+    webrick (1.9.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   github-pages
-  webrick (~> 1.8)
+  webrick (~> 1.9)
 
 BUNDLED WITH
    2.5.9