diff --git a/test-requirements.txt b/test-requirements.txt
index 66d3f9f..822aefe 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +1,3 @@
 pytest==5.2.1
 pytest-cov==2.8.1
-hypothesis
+hypothesis==4.41.2