diff --git a/requirements.txt b/requirements.txt
index f3a5f27..3281363 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ numpy==1.13.2
 astropy==2.0.2
 scipy==0.19.1
 #pyastronomy
-hypothesis==3.31.0
+hypothesis==3.31.2
 pytest==3.2.2
 pytest-cov==2.5.1
 python-coveralls==2.9.1