diff --git a/pkgs/development/python-modules/webdataset/default.nix b/pkgs/development/python-modules/webdataset/default.nix
index 77236a576649..bf7794d33608 100644
--- a/pkgs/development/python-modules/webdataset/default.nix
+++ b/pkgs/development/python-modules/webdataset/default.nix
@@ -93,6 +93,8 @@ buildPythonPackage rec {
   disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # Issue with creating a temp file in the sandbox
     "tests/wids/test_wids_mmtar.py"
+    # hangs the build *after* the tests
+    "tests/webdataset/test_loaders.py"
   ];
 
   meta = {