diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4dc0db4..47fc303 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,4 +4,4 @@ types-xmltodict==0.13.0.3
 
 ruff~=0.3.2
 black~=24.2.0
-mypy~=1.8.0
+mypy~=1.9.0