diff --git a/Gemfile b/Gemfile
index ac2df6de6ba602a0ba02b43b66eec832852b177a..0f0d302537bb42f645ab9e852fa8acf96a7c78f1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -105,7 +105,7 @@ gem 'rails-assets-jeresig--jquery.hotkeys', '0.2.0'
 gem 'rails-assets-jquery-idletimer',        '1.0.1'
 gem 'rails-assets-jquery-placeholder',      '2.1.1'
 gem 'rails-assets-jquery-textchange',       '0.2.3'
-gem 'rails-assets-perfect-scrollbar',       '0.5.7'
+gem 'rails-assets-perfect-scrollbar',       '0.5.9'
 
 # Localization
 
diff --git a/Gemfile.lock b/Gemfile.lock
index c12ae851afc7d7d1b6b0de3930648b7f64e42f1e..8a44e3b8c85828af95dc93bdced04fdd29cbf25b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -499,7 +499,7 @@ GEM
     rails-assets-markdown-it-sanitizer (0.2.1)
     rails-assets-markdown-it-sub (0.1.0)
     rails-assets-markdown-it-sup (0.1.0)
-    rails-assets-perfect-scrollbar (0.5.7)
+    rails-assets-perfect-scrollbar (0.5.9)
       rails-assets-jquery (>= 1.10)
     rails-assets-punycode (1.3.2)
     rails-deprecated_sanitizer (1.0.3)
@@ -758,7 +758,7 @@ DEPENDENCIES
   rails-assets-markdown-it-sanitizer (= 0.2.1)
   rails-assets-markdown-it-sub (= 0.1.0)
   rails-assets-markdown-it-sup (= 0.1.0)
-  rails-assets-perfect-scrollbar (= 0.5.7)
+  rails-assets-perfect-scrollbar (= 0.5.9)
   rails-assets-punycode (= 1.3.2)
   rails-i18n (= 4.0.3)
   rails-timeago (= 2.11.0)