diff --git a/pyproject.toml b/pyproject.toml
index ffa957c..40155b4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
     "Programming Language :: Python :: 3 :: Only"
 ]
 dependencies = [
-  "msgpack==1.0.4",
+  "msgpack==1.1.1",
   "semantic-version==2.10.0",
   "humanfriendly==10.0"
 ]