diff --git a/pkgs/development/python-modules/instructor/default.nix b/pkgs/development/python-modules/instructor/default.nix
index da9f07b52970..97c1d863d189 100644
--- a/pkgs/development/python-modules/instructor/default.nix
+++ b/pkgs/development/python-modules/instructor/default.nix
@@ -88,6 +88,7 @@ buildPythonPackage rec {
     "test_raw_base64_autodetect_png"
 
     # Performance benchmarks that sometimes fail when running many parallel builds
+    "test_combine_system_messages_benchmark"
     "test_extract_system_messages_benchmark"
   ];