diff --git a/Gemfile b/Gemfile
index 0dc10d62..a9b7ca65 100644
--- a/Gemfile
+++ b/Gemfile
@@ -64,7 +64,6 @@ end
 # For production caching.
 group :production do
   gem 'memcache-client', '~> 1.8.5', :require => 'memcache'
-  gem 'passenger_monit', '~> 0.1.1'
 end
 
 # For testing.
diff --git a/Gemfile.lock b/Gemfile.lock
index 6a112abe..3c5d042d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -130,7 +130,6 @@ GEM
       ruby-hmac
     orm_adapter (0.5.0)
     parallel (1.13.0)
-    passenger_monit (0.1.1)
     rack (1.5.5)
     rack-attack (2.2.1)
       rack
@@ -234,7 +233,6 @@ DEPENDENCIES
   nokogiri (~> 1.5.2)
   openneo-auth-signatory (~> 0.1.0)
   parallel (~> 1.13.0)
-  passenger_monit (~> 0.1.1)
   rack-attack (~> 2.2.0)
   rails (= 4.1.16)
   rails-i18n (~> 4.0, >= 4.0.9)
diff --git a/vendor/cache/passenger_monit-0.1.1.gem b/vendor/cache/passenger_monit-0.1.1.gem
deleted file mode 100644
index 3c37710e..00000000
Binary files a/vendor/cache/passenger_monit-0.1.1.gem and /dev/null differ