diff --git a/zict/tests/utils_test.py b/zict/tests/utils_test.py
index 7f6242b..bde1cab 100644
--- a/zict/tests/utils_test.py
+++ b/zict/tests/utils_test.py
@@ -12,7 +12,9 @@
 
 from zict.common import ZictBase
 
-REPEAT_STRESS_TESTS = 100
+# How many times to repeat non-deterministic stress tests.
+# You may set it as high as 50 if you wish to run in CI.
+REPEAT_STRESS_TESTS = 1
 
 
 def generate_random_strings(n, min_len, max_len):