diff --git a/release.nix b/release.nix
index 01755bf..4c6d73b 100644
--- a/release.nix
+++ b/release.nix
@@ -6,13 +6,15 @@ let
 in
 {
   icon-charm-gcc12 = pkgs.callPackage ./derivation.nix {
-    inherit pkgs icon-charm;
+    inherit pkgs;
+    src = icon-charm;
     cc = pkgs.gfortran12;
     cxx = pkgs.gfortran12;
     f77 = pkgs.gfortran12;
   };
   icon-charm-gcc11 = pkgs.callPackage ./derivation.nix {
-    inherit pkgs icon-charm;
+    inherit pkgs;
+    src = icon-charm;
     cc = pkgs.gfortran11;
     cxx = pkgs.gfortran11;
     f77 = pkgs.gfortran11;