diff --git a/pkgs/applications/misc/gollum/Gemfile.lock b/pkgs/applications/misc/gollum/Gemfile.lock
index 7315c0a8d724b..fad3de2b81017 100644
--- a/pkgs/applications/misc/gollum/Gemfile.lock
+++ b/pkgs/applications/misc/gollum/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
     posix-spawn (0.3.13)
-    rack (1.6.8)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rouge (2.1.1)