diff --git a/pkgs/development/compilers/gnatboot/default.nix b/pkgs/development/compilers/gnatboot/default.nix
index 4e1301e47a95..65f6269e2f00 100644
--- a/pkgs/development/compilers/gnatboot/default.nix
+++ b/pkgs/development/compilers/gnatboot/default.nix
@@ -1,14 +1,29 @@
 { stdenv, lib, autoPatchelfHook, fetchzip, xz, ncurses5, readline, gmp, mpfr
 , expat, libipt, zlib, dejagnu, sourceHighlight, python3, elfutils, guile, glibc
+, majorVersion
 }:
 
+let
+  versionMap = {
+    "11" = {
+      version = "11.2.0-4";
+      hash = "sha256-8fMBJp6igH+Md5jE4LMubDmC4GLt4A+bZG/Xcz2LAJQ=";
+    };
+    "12" = {
+      version = "12.1.0-2";
+      hash = "sha256-EPDPOOjWJnJsUM7GGxj20/PXumjfLoMIEFX1EDtvWVY=";
+    };
+  };
+
+in with versionMap.${majorVersion};
+
 stdenv.mkDerivation rec {
   pname = "gnatboot";
-  version = "12.1.0-2";
+  inherit version;
 
   src = fetchzip {
     url = "https://github.com/alire-project/GNAT-FSF-builds/releases/download/gnat-${version}/gnat-x86_64-linux-${version}.tar.gz";
-    hash = "sha256-EPDPOOjWJnJsUM7GGxj20/PXumjfLoMIEFX1EDtvWVY=";
+    inherit hash;
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index aa0c6b4c803a..ab549f5f9e48 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14191,7 +14191,7 @@ with pkgs;
     gnatboot =
       if stdenv.hostPlatform == stdenv.targetPlatform
          && stdenv.buildPlatform == stdenv.hostPlatform
-      then buildPackages.gnatboot
+      then buildPackages.gnatboot11
       else buildPackages.gnat11;
   });
 
@@ -14207,11 +14207,13 @@ with pkgs;
     gnatboot =
       if stdenv.hostPlatform == stdenv.targetPlatform
          && stdenv.buildPlatform == stdenv.hostPlatform
-      then buildPackages.gnatboot
+      then buildPackages.gnatboot12
       else buildPackages.gnat12;
   });
 
-  gnatboot = wrapCC (callPackage ../development/compilers/gnatboot { });
+  gnatboot = gnatboot12;
+  gnatboot11 = wrapCC (callPackage ../development/compilers/gnatboot { majorVersion = "11"; });
+  gnatboot12 = wrapCC (callPackage ../development/compilers/gnatboot { majorVersion = "12"; });
 
   gnu-smalltalk = callPackage ../development/compilers/gnu-smalltalk { };