diff --git a/pkgs/applications/version-management/redmine/Gemfile.lock b/pkgs/applications/version-management/redmine/Gemfile.lock
index 54eed51cd868..c8ef35d19434 100644
--- a/pkgs/applications/version-management/redmine/Gemfile.lock
+++ b/pkgs/applications/version-management/redmine/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
     protected_attributes (1.1.4)
       activemodel (>= 4.0.1, < 5.0)
     public_suffix (3.0.3)
-    rack (1.6.10)
+    rack (1.6.11)
     rack-openid (1.4.2)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
@@ -201,4 +201,4 @@ DEPENDENCIES
   yard
 
 BUNDLED WITH
-   1.16.3
+   1.16.4
diff --git a/pkgs/applications/version-management/redmine/gemset.nix b/pkgs/applications/version-management/redmine/gemset.nix
index fe56298056b1..c0b8cb8d6e2d 100644
--- a/pkgs/applications/version-management/redmine/gemset.nix
+++ b/pkgs/applications/version-management/redmine/gemset.nix
@@ -350,10 +350,10 @@
   rack = {
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0in0amn0kwvzmi8h5zg6ijrx5wpsf8h96zrfmnk1kwh2ql4sxs2q";
+      sha256 = "1g9926ln2lw12lfxm4ylq1h6nl0rafl10za3xvjzc87qvnqic87f";
       type = "gem";
     };
-    version = "1.6.10";
+    version = "1.6.11";
   };
   rack-openid = {
     dependencies = ["rack" "ruby-openid"];