diff --git a/pkgs/development/python-modules/requests-cache/default.nix b/pkgs/development/python-modules/requests-cache/default.nix
index 92d46c37db03..3be91dbea9cd 100644
--- a/pkgs/development/python-modules/requests-cache/default.nix
+++ b/pkgs/development/python-modules/requests-cache/default.nix
@@ -64,7 +64,7 @@ buildPythonPackage (finalAttrs: {
       orjson
       ujson
     ]
-    ++ lib.concatAttrValues (lib.removeAttrs finalAttrs.optional-dependencies [ "all" ]);
+    ++ lib.concatAttrValues (lib.removeAttrs finalAttrs.passthru.optional-dependencies [ "all" ]);
   };
 
   nativeCheckInputs = [