diff --git a/pkgs/applications/misc/gollum/Gemfile.lock b/pkgs/applications/misc/gollum/Gemfile.lock
index 977bd5e50dd..e6c66cba1e0 100644
--- a/pkgs/applications/misc/gollum/Gemfile.lock
+++ b/pkgs/applications/misc/gollum/Gemfile.lock
@@ -39,7 +39,7 @@ GEM
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
     posix-spawn (0.3.13)
-    rack (1.6.10)
+    rack (1.6.11)
     rack-protection (1.5.5)
       rack
     rouge (2.2.1)
@@ -65,4 +65,4 @@ DEPENDENCIES
   gollum
 
 BUNDLED WITH
-   1.16.3
+   1.16.4
diff --git a/pkgs/applications/misc/gollum/gemset.nix b/pkgs/applications/misc/gollum/gemset.nix
index 3413b6ba631..bb105805ca8 100644
--- a/pkgs/applications/misc/gollum/gemset.nix
+++ b/pkgs/applications/misc/gollum/gemset.nix
@@ -137,10 +137,10 @@
   rack = {
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0in0amn0kwvzmi8h5zg6ijrx5wpsf8h96zrfmnk1kwh2ql4sxs2q";
+      sha256 = "1g9926ln2lw12lfxm4ylq1h6nl0rafl10za3xvjzc87qvnqic87f";
       type = "gem";
     };
-    version = "1.6.10";
+    version = "1.6.11";
   };
   rack-protection = {
     dependencies = ["rack"];