diff --git a/dependencies/default/constraints.txt b/dependencies/default/constraints.txt
index ff036c2a..32c9df81 100644
--- a/dependencies/default/constraints.txt
+++ b/dependencies/default/constraints.txt
@@ -7,7 +7,7 @@ hypothesis==6.56.4
 idna==3.4
 importlib-metadata==5.0.0
 iniconfig==1.1.1
-mypy==0.990
+mypy==0.991
 mypy-extensions==0.4.3
 outcome==1.2.0
 packaging==21.3