diff --git a/requirements-test.txt b/requirements-test.txt
index 329e331..97123cd 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -5,6 +5,6 @@ flake8==6.0.0
 pep257==0.7.0
 doc8==1.0.0
 Pygments==2.13.0
-mypy==0.991
+mypy==1.9.0
 pytest==7.2.0
 pytest-cov==4.0.0