diff --git a/requirements.txt b/requirements.txt
index 8e4d9e3..38f0401 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ matplotlib==2.2.2
 astropy==3.0.3
 scipy==1.1.0
 pyastronomy==0.12.0
-hypothesis==3.57.0
+hypothesis==3.59.3
 pytest==3.6.1
 pytest-cov==2.5.1
 python-coveralls==2.9.1