diff --git a/pkgs/development/tools/rust/cargo-pgrx/pinned.nix b/pkgs/development/tools/rust/cargo-pgrx/pinned.nix
index a061dc275c1a..77d623d4902d 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_6 = {
-    version = "0.12.6";
-    hash = "sha256-7aQkrApALZe6EoQGVShGBj0UIATnfOy2DytFj9IWdEA=";
-    cargoHash = "sha256-pnMxWWfvr1/AEp8DvG4awig8zjdHizJHoZ5RJA8CL08=";
-  };
-
   cargo-pgrx_0_16_0 = {
     version = "0.16.0";
     hash = "sha256-emNR7fXNVD9sY/Mdno7mwpH6l/7AD28cBUsFRn9je50=";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8d9e5f3d717f..748f61a2ba44 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4197,7 +4197,6 @@ with pkgs;
   defaultCrateOverrides = callPackage ../build-support/rust/default-crate-overrides.nix { };
 
   inherit (callPackages ../development/tools/rust/cargo-pgrx { })
-    cargo-pgrx_0_12_6
     cargo-pgrx_0_16_0
     cargo-pgrx_0_16_1
     cargo-pgrx_0_17_0