diff --git a/requirements/dev.txt b/requirements/dev.txt
index d0b31fc..00e55c8 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -15,7 +15,7 @@ pyright>=1.1.409
 
 # Type stubs (compatible versions)
 types-python-dateutil>=2.8.0.0
-types-openpyxl>=3.1.0.0
+types-openpyxl>=3.1.5.20260508
 types-tabulate>=0.10.0.20260408
 # Note: python-dotenv has inline types (py.typed), no stub package needed
 # Note: types-requests removed (requests library not used for GDPR compliance)