diff --git a/pyproject.toml b/pyproject.toml
index 646733f..73c90ea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dev = [
   "pytest==9.1.1",
   "pytest-cov==7.1.0",
   "ruff==0.15.22",
-  "types-openpyxl==3.1.5.20260518",
+  "types-openpyxl==3.1.5.20260724",
 ]
 
 [project.scripts]