diff --git a/pyproject.toml b/pyproject.toml
index 421550c6e..b4fb81e14 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dependencies = [
     "openai>=1.58.1",
     "openpyxl>=3.1.5",
     "pillow>=11.2.1",
-    "pydantic>=2.11.5",
+    "pydantic==2.11.5",
     "pyodbc>=5.1.0",
     "python-dotenv>=1.0.1",
     "pypdf>=5.1.0",