diff --git a/airbyte_cdk/sources/declarative/auth/oauth.py b/airbyte_cdk/sources/declarative/auth/oauth.py
index 3133a544..22e5a0d7 100644
--- a/airbyte_cdk/sources/declarative/auth/oauth.py
+++ b/airbyte_cdk/sources/declarative/auth/oauth.py
@@ -122,18 +122,24 @@ def __post_init__(self, parameters: Mapping[str, Any]) -> None:
         self._refresh_request_headers = InterpolatedMapping(
             self.refresh_request_headers or {}, parameters=parameters
         )
-        if isinstance(self.token_expiry_date, (int, str)) and str(self.token_expiry_date).isdigit():
-            self._token_expiry_date = parse(self.token_expiry_date)
-        else:
-            self._token_expiry_date = (
-                parse(
-                    InterpolatedString.create(self.token_expiry_date, parameters=parameters).eval(
-                        self.config
+        try:
+            if (
+                isinstance(self.token_expiry_date, (int, str))
+                and str(self.token_expiry_date).isdigit()
+            ):
+                self._token_expiry_date = parse(self.token_expiry_date)
+            else:
+                self._token_expiry_date = (
+                    parse(
+                        InterpolatedString.create(
+                            self.token_expiry_date, parameters=parameters
+                        ).eval(self.config)
                     )
+                    if self.token_expiry_date
+                    else now() - timedelta(days=1)
                 )
-                if self.token_expiry_date
-                else now() - timedelta(days=1)
-            )
+        except ValueError as e:
+            raise ValueError(f"Invalid token expiry date format: {e}")
         self.use_profile_assertion = (
             InterpolatedBoolean(self.use_profile_assertion, parameters=parameters)
             if isinstance(self.use_profile_assertion, str)
diff --git a/airbyte_cdk/sources/streams/http/requests_native_auth/abstract_oauth.py b/airbyte_cdk/sources/streams/http/requests_native_auth/abstract_oauth.py
index 6c879c94..df3065c0 100644
--- a/airbyte_cdk/sources/streams/http/requests_native_auth/abstract_oauth.py
+++ b/airbyte_cdk/sources/streams/http/requests_native_auth/abstract_oauth.py
@@ -191,14 +191,19 @@ def _parse_token_expiration_date(self, value: Union[str, int]) -> AirbyteDateTim
                 raise ValueError(
                     f"Invalid token expiry date format {self.token_expiry_date_format}; a string representing the format is required."
                 )
-            return parse(str(value))
+            try:
+                return parse(str(value))
+            except ValueError as e:
+                raise ValueError(f"Invalid token expiry date format: {e}")
         else:
             try:
                 # Only accept numeric values (as int/float/string) when no format specified
                 seconds = int(float(str(value)))
                 return add_seconds(now(), seconds)
             except (ValueError, TypeError):
-                raise ValueError(f"Invalid expires_in value: {value}. Expected number of seconds when no format specified.")
+                raise ValueError(
+                    f"Invalid expires_in value: {value}. Expected number of seconds when no format specified."
+                )
 
     @property
     def token_expiry_is_time_of_expiration(self) -> bool:
diff --git a/airbyte_cdk/utils/datetime_helpers.py b/airbyte_cdk/utils/datetime_helpers.py
index 4348dab9..e2675eaf 100644
--- a/airbyte_cdk/utils/datetime_helpers.py
+++ b/airbyte_cdk/utils/datetime_helpers.py
@@ -63,12 +63,12 @@ def parse(dt_str: Union[str, int]) -> AirbyteDateTime:
     - Falls back to dateutil.parser for other string formats
     Always returns a timezone-aware datetime (defaults to UTC if no timezone specified).
     """
-    if isinstance(dt_str, int) or (isinstance(dt_str, str) and dt_str.isdigit()):
-        timestamp = int(dt_str)
-        # Always treat numeric values as Unix timestamps
-        dt_obj = datetime.fromtimestamp(timestamp, tz=timezone.utc)
-        return AirbyteDateTime.from_datetime(dt_obj)
     try:
+        if isinstance(dt_str, int) or (isinstance(dt_str, str) and dt_str.isdigit()):
+            # Always treat numeric values as Unix timestamps
+            timestamp = int(dt_str)
+            dt_obj = datetime.fromtimestamp(timestamp, tz=timezone.utc)
+            return AirbyteDateTime.from_datetime(dt_obj)
         dt_obj = parser.parse(str(dt_str))
         if dt_obj.tzinfo is None:
             dt_obj = dt_obj.replace(tzinfo=timezone.utc)