diff --git a/overlay.nix b/overlay.nix
index 6d2af14b..df21edfa 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -6,7 +6,11 @@ with final.lib;
 let
   callPackage = final.callPackage;
 
-  bscPkgs = {
+  mkStrict = drv: if (isDerivation drv && drv ? overrideAttrs && !(drv ? strictDeps))
+    then drv.overrideAttrs { strictDeps = true; }
+    else drv;
+
+  bscPkgs = mapAttrs (_: mkStrict) {
     amd-uprof = prev.callPackage ./pkgs/amd-uprof/default.nix { };
     bench6 = callPackage ./pkgs/bench6/default.nix { };
     bigotes = callPackage ./pkgs/bigotes/default.nix { };