diff --git a/.github/scripts/check_diff.py b/.github/scripts/check_diff.py
index ea316c94483ac..746d67d0885d4 100644
--- a/.github/scripts/check_diff.py
+++ b/.github/scripts/check_diff.py
@@ -143,7 +143,7 @@ def _get_configs_for_single_dir(job: str, dir_: str) -> List[Dict[str, str]]:
 
 
 def _get_pydantic_test_configs(
-    dir_: str, *, python_version: str = "3.11"
+    dir_: str, *, python_version: str = "3.12"
 ) -> List[Dict[str, str]]:
     with open("./libs/core/uv.lock", "rb") as f:
         core_uv_lock_data = tomllib.load(f)
diff --git a/.github/workflows/_test_pydantic.yml b/.github/workflows/_test_pydantic.yml
index 5c9211ded5173..a276242d189b1 100644
--- a/.github/workflows/_test_pydantic.yml
+++ b/.github/workflows/_test_pydantic.yml
@@ -13,7 +13,7 @@ on:
         required: false
         type: string
         description: "Python version to use"
-        default: "3.11"
+        default: "3.12"
       pydantic-version:
         required: true
         type: string