diff --git a/test-requirements.txt b/test-requirements.txt
index c7ddd6f3..b7442ab4 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@ pycodestyle==2.14.0
 pydocstyle==6.3.0
 dodgy==0.2.1
 isort==8.0.1
-mypy==2.3.0
+mypy==2.3.1
 Flask-Testing==0.8.1
 nose2-cov==1.0a4
 coverage==7.15.2