diff --git a/requirements/dev.txt b/requirements/dev.txt
index 31b4272..edb83ba 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -7,7 +7,7 @@ cython==0.28.2
 flake8==3.5.0
 gunicorn==19.7.1
 isort==4.3.4
-multidict==4.1.0
+multidict==6.7.0
 pip==10.0.0
 pyflakes==1.6.0
 pytest-cov==2.5.1