diff --git a/dev_scripts/codegen/download_aas_core_meta_model.py b/dev_scripts/codegen/download_aas_core_meta_model.py
index 5590ffd7..d30391cc 100644
--- a/dev_scripts/codegen/download_aas_core_meta_model.py
+++ b/dev_scripts/codegen/download_aas_core_meta_model.py
@@ -4,6 +4,7 @@
 import os
 import argparse
 import sys
+from typing import Dict, Union
 
 import requests
 
@@ -24,7 +25,7 @@ def _latest_commit_sha_for_path(
     Uses: GET /repos/{owner}/{repo}/commits?path=...&sha=...&per_page=1
     """
     url = f"{GITHUB_API}/repos/{owner}/{repo}/commits"
-    params = {"path": path, "sha": ref, "per_page": 1}
+    params: Dict[str, Union[str, int]] = {"path": path, "sha": ref, "per_page": 1}
     resp = requests.get(url, params=params, timeout=timeout)
     try:
         resp.raise_for_status()
@@ -43,6 +44,7 @@ def _latest_commit_sha_for_path(
     sha = commits[0].get("sha")
     if not sha or not isinstance(sha, str):
         raise RuntimeError("API did not return a valid commit SHA.")
+    assert isinstance(sha, str)
     return sha
 
 
diff --git a/dev_scripts/continuous_integration_of_dev_scripts/precommit.py b/dev_scripts/continuous_integration_of_dev_scripts/precommit.py
index a7e9d6ab..0f1cb06e 100644
--- a/dev_scripts/continuous_integration_of_dev_scripts/precommit.py
+++ b/dev_scripts/continuous_integration_of_dev_scripts/precommit.py
@@ -104,6 +104,8 @@ def main() -> int:
     if Step.REFORMAT in selects and Step.REFORMAT not in skips:
         print("Re-formatting...")
         reformat_targets = [
+            "codegen/codegen.py",
+            "codegen/download_aas_core_meta_model.py",
             "continuous_integration_of_dev_scripts",
             "update_to_aas_core_meta_codegen.py",
         ]
@@ -129,6 +131,8 @@ def main() -> int:
     if Step.MYPY in selects and Step.MYPY not in skips:
         print("Mypy'ing...")
         mypy_targets = [
+            "codegen/codegen.py",
+            "codegen/download_aas_core_meta_model.py",
             "continuous_integration_of_dev_scripts",
             "update_to_aas_core_meta_codegen.py",
         ]
@@ -147,6 +151,8 @@ def main() -> int:
     if Step.PYLINT in selects and Step.PYLINT not in skips:
         print("Pylint'ing...")
         pylint_targets = [
+            "codegen/codegen.py",
+            "codegen/download_aas_core_meta_model.py",
             "continuous_integration_of_dev_scripts",
             "update_to_aas_core_meta_codegen.py",
         ]
diff --git a/dev_scripts/pyproject.toml b/dev_scripts/pyproject.toml
index 5747896e..c2f4db7f 100644
--- a/dev_scripts/pyproject.toml
+++ b/dev_scripts/pyproject.toml
@@ -27,6 +27,7 @@ dev = [
     "black==25.9.0",
     "mypy==1.18.2",
     "pylint==3.3.8",
+    "types-requests>=2.32.4",
 ]
 
 [tool.setuptools.packages.find]