diff --git a/pkgs/development/tools/rust/cargo-pgrx/pinned.nix b/pkgs/development/tools/rust/cargo-pgrx/pinned.nix
index f2954f52b431..d8c9b18a3576 100644
--- a/pkgs/development/tools/rust/cargo-pgrx/pinned.nix
+++ b/pkgs/development/tools/rust/cargo-pgrx/pinned.nix
@@ -1,11 +1,5 @@
 # nixpkgs-update: no auto update
 {
-  cargo-pgrx_0_12_0_alpha_1 = {
-    version = "0.12.0-alpha.1";
-    hash = "sha256-0m9oaqjU42RYyttkTihADDrRMjr2WoK/8sInZALeHws=";
-    cargoHash = "sha256-zYjqE7LZLnTaVxWAPWC1ncEjCMlrhy4THtgecB7wBYY=";
-  };
-
   cargo-pgrx_0_12_6 = {
     version = "0.12.6";
     hash = "sha256-7aQkrApALZe6EoQGVShGBj0UIATnfOy2DytFj9IWdEA=";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 7150056b116f..698d4a98f065 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4683,7 +4683,6 @@ with pkgs;
   defaultCrateOverrides = callPackage ../build-support/rust/default-crate-overrides.nix { };
 
   inherit (callPackages ../development/tools/rust/cargo-pgrx { })
-    cargo-pgrx_0_12_0_alpha_1
     cargo-pgrx_0_12_6
     cargo-pgrx_0_16_0
     cargo-pgrx_0_16_1