diff --git a/pkgs/overlays.nix b/pkgs/overlays.nix
index 6bb89cd..3f4e266 100644
--- a/pkgs/overlays.nix
+++ b/pkgs/overlays.nix
@@ -1,4 +1,5 @@
 [
+  (import ((import ../npins).agenix + "/overlay.nix"))
   (final: prev: {
     pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [(self: _: {
         loadcredential = self.callPackage ./loadcredential { };
diff --git a/shell.nix b/shell.nix
index 1c1b950..2cb354f 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,12 +5,11 @@ let
     config.allowUnfree = true;
     overlays = import ./pkgs/overlays.nix;
   };
-  agenix = sources.agenix;
 in
 pkgs.mkShell {
   packages = [
     pkgs.npins
     pkgs.colmena
-    (pkgs.callPackage "${agenix}/pkgs/agenix.nix" { })
+    pkgs.agenix
   ];
 }