diff --git a/test-requirements.txt b/test-requirements.txt
index e0dc9aa..a9388a3 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
-hypothesis>=5.0.0
+hypothesis>=5.0.0,<6.0.0
 pytest
 pytest-cov
 pytest-localserver