diff --git a/requirements_dev.txt b/requirements_dev.txt
index 9ebbf42..3b30bb6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -15,7 +15,7 @@ pytest-runner>=2.11.1
 inflection>=0.3.1
 isort>=4.3.9
 yapf>=0.20.0
-m2r==0.2.1
+m2r==0.3.1
 codecov>=1.4.0
 codacy-coverage==1.3.11
 twine>=1.13.0