diff --git a/requirements.txt b/requirements.txt
index 0b26d63..21c4881 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ attrs==18.2.0
 funcy==1.10.3
 lenses==0.4.0
 parsimonious==0.8.1
-hypothesis==3.32.1
+hypothesis==3.73.0
 
 pytest==3.2.3
 pytest-bpdb==0.1.4