diff --git a/tests/apitests/python/library/cosign.py b/tests/apitests/python/library/cosign.py
index 7638b1903..fc3526cfc 100644
--- a/tests/apitests/python/library/cosign.py
+++ b/tests/apitests/python/library/cosign.py
@@ -12,7 +12,7 @@ def generate_key_pair():
     base.run_command(command)
 
 def sign_artifact(artifact):
-    command = ["cosign", "sign", "-y", "--allow-insecure-registry", "--key", "cosign.key", artifact]
+    command = ["cosign", "sign", "-y", "--allow-insecure-registry", "--new-bundle-format=false", "--use-signing-config=false", "--key", "cosign.key", artifact]
     base.run_command(command)
 
 def push_artifact_sbom(artifact, sbom_path, type="spdx"):