diff --git a/test/e2e/v1beta1/scripts/gh-actions/run-e2e-tune-api.py b/test/e2e/v1beta1/scripts/gh-actions/run-e2e-tune-api.py
index e35df2aa204..3a7c4949cc7 100644
--- a/test/e2e/v1beta1/scripts/gh-actions/run-e2e-tune-api.py
+++ b/test/e2e/v1beta1/scripts/gh-actions/run-e2e-tune-api.py
@@ -14,7 +14,7 @@
 from verify import verify_experiment_results
 
 # Experiment timeout is 60 min.
-EXPERIMENT_TIMEOUT = 60 * 15
+EXPERIMENT_TIMEOUT = 60 * 10
 
 # The default logging config.
 logging.basicConfig(level=logging.INFO)