diff --git a/dev_requirements.txt b/dev_requirements.txt
index 2c7f35e..5b1987e 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -3,4 +3,4 @@ pyflakes==2.0.0
 # DocStringChecker currently only works with pylint 1.6.5. Upgrading causes it
 # to stop producing errors on bad docstrings.
 pylint==1.6.5
-yapf==0.25.0
+yapf==0.27.0