diff --git a/requirements.txt b/requirements.txt
index a0004c1..ecd13a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,4 @@ domdf-python-tools>=2.5.0
 isort<=5.6.4,>=5.5.2
 toml>=0.10.2
 typing-extensions>=3.7.4.3
-yapf==0.30.0
+yapf==0.31.0