diff --git a/requirements.txt b/requirements.txt
index 3128af7..ca69d6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ flake8-formatter-abspath==1.0.1
 jsonschema==3.0.1
 mccabe==0.6.1
 more-itertools==7.0.0
-msgpack==0.6.1
+msgpack==1.2.1
 pluggy==0.9.0
 py==1.10.0
 pycodestyle==2.5.0