diff --git a/requirements/dev.txt b/requirements/dev.txt
index c22b06a..072140a 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -5,7 +5,7 @@ chardet==3.0.4
 coverage==4.5.1
 cython==0.28.2
 flake8==3.5.0
-gunicorn==19.7.1
+gunicorn==20.1.0
 isort==4.3.4
 multidict==4.1.0
 pip==10.0.0