diff --git a/pkgs/development/compilers/gnatboot/default.nix b/pkgs/development/compilers/gnatboot/default.nix
index d7a7e981e08..4e1301e47a9 100644
--- a/pkgs/development/compilers/gnatboot/default.nix
+++ b/pkgs/development/compilers/gnatboot/default.nix
@@ -4,11 +4,11 @@
 
 stdenv.mkDerivation rec {
   pname = "gnatboot";
-  version = "11.2.0-4";
+  version = "12.1.0-2";
 
   src = fetchzip {
     url = "https://github.com/alire-project/GNAT-FSF-builds/releases/download/gnat-${version}/gnat-x86_64-linux-${version}.tar.gz";
-    hash = "sha256-8fMBJp6igH+Md5jE4LMubDmC4GLt4A+bZG/Xcz2LAJQ=";
+    hash = "sha256-EPDPOOjWJnJsUM7GGxj20/PXumjfLoMIEFX1EDtvWVY=";
   };
 
   nativeBuildInputs = [