diff --git a/packages/datacommons-mcp/datacommons_mcp/app.py b/packages/datacommons-mcp/datacommons_mcp/app.py
index a975617..4fc21b0 100644
--- a/packages/datacommons-mcp/datacommons_mcp/app.py
+++ b/packages/datacommons-mcp/datacommons_mcp/app.py
@@ -45,7 +45,7 @@ def __init__(self) -> None:
         # Load settings
         try:
             self.settings = settings.get_dc_settings()
-            settings_dict = self.settings.model_dump()
+            settings_dict = self.settings.model_dump(mode="json")
             settings_dict["api_key"] = (
                 "<SET>" if settings_dict.get("api_key") else "<NOT_SET>"
             )
diff --git a/scripts/create_release_pr.py b/scripts/create_release_pr.py
index 7749500..19ac2de 100755
--- a/scripts/create_release_pr.py
+++ b/scripts/create_release_pr.py
@@ -84,7 +84,9 @@ def main() -> None:
         description="Create a version bump PR via Cloud Build"
     )
     parser.add_argument("--project", default="datcom-ci", help="GCP Project ID")
-    parser.add_argument("--bump-type", choices=["major", "minor", "patch"], help="Bump type")
+    parser.add_argument(
+        "--bump-type", choices=["major", "minor", "patch"], help="Bump type"
+    )
 
     args = parser.parse_args()
 
diff --git a/scripts/create_staging_tag.py b/scripts/create_staging_tag.py
index ed8be90..eb0848b 100755
--- a/scripts/create_staging_tag.py
+++ b/scripts/create_staging_tag.py
@@ -73,7 +73,10 @@ def main() -> None:
         "--commit",
         help="Specific commit hash to tag (defaults to HEAD). If provided, version is read from this commit.",
     )
-    parser.add_argument("--bump-type", choices=["none", "major", "minor", "patch"], help="Bump type",
+    parser.add_argument(
+        "--bump-type",
+        choices=["none", "major", "minor", "patch"],
+        help="Bump type",
         default="none",
     )
     args = parser.parse_args()
@@ -91,7 +94,10 @@ def main() -> None:
         print("Using current HEAD.")
 
     if args.bump_type == "none":
-        print("\nDo you want to bump the base version before creating the RC? (y/N) [n]: ", end="")
+        print(
+            "\nDo you want to bump the base version before creating the RC? (y/N) [n]: ",
+            end="",
+        )
         bump_choice = input().strip().lower()
         if bump_choice == "y":
             args.bump_type = prompt_for_bump_type()
diff --git a/scripts/get_next_version.py b/scripts/get_next_version.py
index aabca5c..d45cc85 100755
--- a/scripts/get_next_version.py
+++ b/scripts/get_next_version.py
@@ -55,7 +55,6 @@ def get_local_version() -> str:
 TEST_PYPI_JSON_URL = f"https://test.pypi.org/pypi/{PACKAGE_NAME}/json"
 
 
-
 def bump_version(current_version: str, bump_type: str) -> str:
     major, minor, patch = map(int, current_version.split("."))
     if bump_type == "major":
@@ -82,7 +81,9 @@ def prompt_for_bump_type() -> str:
     return "none"
 
 
-def get_next_version(base_version: str, bump_type: str = "none", release_type: str = "rc") -> None:
+def get_next_version(
+    base_version: str, bump_type: str = "none", release_type: str = "rc"
+) -> None:
     if bump_type and bump_type != "none":
         base_version = bump_version(base_version, bump_type)