diff --git a/requirements.txt b/requirements.txt
index a02afcb..0daefae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ pytest-cov==2.5.1
 pytest-xdist==1.22.2
 pytest-benchmark==3.1.1
 Sphinx==1.7.4
-wheel==0.31.1
+wheel==0.33.6