diff --git a/Gemfile b/Gemfile
index d7b8fe661d03..07df410eb4b6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ group :development do
   gem 'jekyll', '~> 3.0'
   gem 'compass', '~> 0.12'
   gem 'sass-globbing', '~> 1.0'
-  gem 'stringex', '~> 1.4'
+  gem 'stringex', '~> 2.8'
   gem 'pry'
 
   # See https://github.com/home-assistant/home-assistant.github.io/pull/3904
diff --git a/Gemfile.lock b/Gemfile.lock
index 9b9a87a02c02..da6582948b66 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -86,7 +86,7 @@ GEM
       rack-protection (~> 1.4)
       tilt (>= 1.3, < 3)
     slop (3.6.0)
-    stringex (1.5.1)
+    stringex (2.8.5)
     tilt (2.0.8)
     titlecase (0.1.1)
 
@@ -107,7 +107,7 @@ DEPENDENCIES
   rb-inotify (< 0.9.9)
   sass-globbing (~> 1.0)
   sinatra (~> 1.4.2)
-  stringex (~> 1.4)
+  stringex (~> 2.8)
 
 RUBY VERSION
    ruby 2.4.1p111