diff --git a/pkgs/applications/networking/cluster/kops/default.nix b/pkgs/applications/networking/cluster/kops/default.nix
index 555af740b926..264f293e4d9a 100644
--- a/pkgs/applications/networking/cluster/kops/default.nix
+++ b/pkgs/applications/networking/cluster/kops/default.nix
@@ -49,12 +49,6 @@ in
 rec {
   mkKops = generic;
 
-  kops_1_23 = mkKops rec {
-    version = "1.23.4";
-    sha256 = "sha256-hUj/kUyaqo8q3SJTkd5+9Ld8kfE8wCYNJ2qIATjXqhU=";
-    rev = "v${version}";
-  };
-
   kops_1_24 = mkKops rec {
     version = "1.24.3";
     sha256 = "sha256-o84060P2aHTIm61lSkz2/GqzYd2NYk1zKgGdNaHlWfA=";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 585b698756c6..0dba4df7e14c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -38200,7 +38200,6 @@ with pkgs;
   # Exceptions are versions that we need to keep to allow upgrades from older NixOS releases
   inherit (callPackage ../applications/networking/cluster/kops {})
     mkKops
-    kops_1_23
     kops_1_24
     kops_1_25
     ;