diff --git a/nix/default.nix b/nix/default.nix
index 6b16bb28..40a9a587 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -86,7 +86,7 @@ stdenv.mkDerivation rec {
       their associated options with a simple interface.
     '';
     platforms = platforms.unix;
-    license = licenses.gpl3Plus;
+    license = licenses.gpl3Only;
     maintainers = with maintainers; [ starcraft66 kloenk ];
   };
 }