diff --git a/tests/generators/sync/main.py b/tests/generators/sync/main.py
index 68e38cebe..5563e6f8c 100644
--- a/tests/generators/sync/main.py
+++ b/tests/generators/sync/main.py
@@ -1,5 +1,5 @@
 from eth2spec.gen_helpers.gen_from_tests.gen import run_state_test_generators
-from eth2spec.test.helpers.constants import BELLATRIX, CAPELLA, DENEB
+from eth2spec.test.helpers.constants import BELLATRIX, CAPELLA, DENEB, EIP6110
 
 
 if __name__ == "__main__":