diff --git a/requirement-dev.txt b/requirement-dev.txt
index defd055..dc888a7 100644
--- a/requirement-dev.txt
+++ b/requirement-dev.txt
@@ -1,4 +1,4 @@
-yapf==0.23.0
+yapf==0.31.0
 twine==1.11.0
 bumpversion==0.5.3
 pytest==3.7.4