diff --git a/requirements-dev.txt b/requirements-dev.txt
index 00a647ef..9d00954a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,5 +2,5 @@ coverage[toml]==7.4.0
 flake8==7.0.0
 gcp-storage-emulator==2022.6.11
 moto[s3]==4.2.13
-mypy==1.8.0
+mypy==1.9.0
 pylint==3.0.3