diff --git a/Gemfile b/Gemfile
index 90f3083ab..ba5a5e160 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,4 +2,4 @@ source "https://rubygems.org"
 
 gem "github-pages", group: :jekyll_plugins
 
-gem "webrick", "~> 1.9"
+gem "webrick", "~> 1.9", ">= 1.9.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index e6ce28043..b2d345f10 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -270,14 +270,14 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (1.0.2)
-    webrick (1.9.0)
+    webrick (1.9.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   github-pages
-  webrick (~> 1.9)
+  webrick (~> 1.9, >= 1.9.1)
 
 BUNDLED WITH
    2.1.4