diff --git a/pkgs/applications/networking/cluster/kops/default.nix b/pkgs/applications/networking/cluster/kops/default.nix
index e4a499ba0910..478bc355de60 100644
--- a/pkgs/applications/networking/cluster/kops/default.nix
+++ b/pkgs/applications/networking/cluster/kops/default.nix
@@ -65,8 +65,8 @@ rec {
   };
 
   kops_1_21 = mkKops rec {
-    version = "1.21.1";
-    sha256 = "sha256-/C/fllgfAovHuyGRY+LM09bsUpYdA8zDw1w0b9HnlBc=";
+    version = "1.21.4";
+    sha256 = "sha256-f2xOVa3N/GH5IoI6H/QwDdKTeQoF/kEHX6lNytCZ9cs=";
     rev = "v${version}";
   };
 }