diff --git a/CHANGELOG.md b/CHANGELOG.md
index d8ef1de..912efef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## v24.36.0
+
+- Handle token refresh
+- Check fileRegex
+- Handle fileWatch
+
 ## v24.32.1
 
 - Minor fix to accept file_pattern arg in list_files method.
diff --git a/README.md b/README.md
index 925299f..f8b2ffd 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,6 @@ JSON configs for transfers can be defined as follows:
         "pattern" : "(?<![^ ])(?=[^ ])(?!ab)",   ## Regex for prefixing
         "sub" : "Archived_"
     },
-    "fileRegex": "**.txt" ## Global Expression syntax (only download .txt)
+    "fileRegex": ".*//.txt$" ## accepts re module matching
 }
 ```
diff --git a/pyproject.toml b/pyproject.toml
index 0a5a4eb..cac57c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "otf-addons-gcp"
-version = "v24.32.1"
+version = "v24.36.0"
 authors = [{ name = "Aldo Troiano", email = "a.troiano@reply.com" }]
 license = { text = "GPLv3" }
 classifiers = [
@@ -51,7 +51,7 @@ dev = [
 profile = 'black'
 
 [tool.bumpver]
-current_version = "v24.32.1"
+current_version = "v24.36.0"
 version_pattern = "vYY.WW.PATCH[-TAG]"
 commit_message = "bump version {old_version} -> {new_version}"
 commit = true
diff --git a/src/opentaskpy/addons/gcp/remotehandlers/bucket.py b/src/opentaskpy/addons/gcp/remotehandlers/bucket.py
index 8fcbfaf..01b7e3c 100644
--- a/src/opentaskpy/addons/gcp/remotehandlers/bucket.py
+++ b/src/opentaskpy/addons/gcp/remotehandlers/bucket.py
@@ -5,7 +5,6 @@
 
 import opentaskpy.otflogging
 import requests
-from opentaskpy.exceptions import RemoteTransferError
 from opentaskpy.remotehandlers.remotehandler import RemoteTransferHandler
 
 from .creds import get_access_token
@@ -33,6 +32,10 @@ def __init__(self, spec: dict):
         # Generating Access Token for Transfer
         self.credentials = get_access_token(self.spec["protocol"])
 
+    def validate_or_refresh_creds(self) -> None:
+        """Ensure the credentials are valid, refresh if necessary."""
+        self.credentials = get_access_token(self.spec["protocol"])
+
     def supports_direct_transfer(self) -> bool:
         """Return False, as all files should go via the worker."""
         return False
@@ -51,6 +54,7 @@ def handle_post_copy_action(self, files: list[str]) -> int:
             or self.spec["postCopyAction"]["action"] == "rename"
         ):
             try:
+                self.validate_or_refresh_creds()  # refresh creds
                 # Append a directory if one is defined
 
                 for file in files:
@@ -138,6 +142,7 @@ def push_files_from_worker(
             int: 0 if successful, 1 if not.
         """
         try:
+            self.validate_or_refresh_creds()  # refresh creds
             if file_list:
                 files = list(file_list.keys())
             else:
@@ -212,6 +217,7 @@ def pull_files_to_worker(
         result = 0
         self.logger.info("Downloading file from GCP.")
         try:
+            self.validate_or_refresh_creds()  # refresh creds
             for file in files:
                 self.logger.info(file)
                 file = file.replace(
@@ -278,17 +284,14 @@ def list_files(
         """
         self.logger.info("Listing Files in Bucket.")
         try:
+            self.validate_or_refresh_creds()  # refresh creds
             directory = directory or self.spec.get("directory", "")
 
             base_url = (
                 f"https://storage.googleapis.com/storage/v1/b/{self.spec['bucket']}/o"
             )
             headers = {"Authorization": f"Bearer {self.credentials}"}
-            params = (
-                {"prefix": directory, "maxResults": MAX_OBJECTS_PER_QUERY}
-                if directory
-                else {}
-            )
+            params = {"prefix": directory, "maxResults": MAX_OBJECTS_PER_QUERY}
             items = []
 
             while True:
@@ -307,7 +310,7 @@ def list_files(
                         break
                 else:
                     self.logger.error(f"List files returned {response.status_code}")
-                    raise RemoteTransferError(response)
+                    self.logger.error(f"Remote files not found: {response}")
 
             filenames = [
                 item["name"]
diff --git a/src/opentaskpy/addons/gcp/remotehandlers/creds.py b/src/opentaskpy/addons/gcp/remotehandlers/creds.py
index 35d58f0..2de3375 100644
--- a/src/opentaskpy/addons/gcp/remotehandlers/creds.py
+++ b/src/opentaskpy/addons/gcp/remotehandlers/creds.py
@@ -1,5 +1,7 @@
 """GCP helper functions."""
 
+from datetime import datetime, timedelta
+
 import opentaskpy.otflogging
 from google.auth.transport.requests import Request
 from google.oauth2 import credentials, service_account
@@ -15,14 +17,19 @@ def get_access_token(credentials_: dict) -> credentials:
     logger = opentaskpy.otflogging.init_logging(__name__, None, None)
     try:
         # Get an Access Token
-        auth_creds = None  # Initialising authCreds
-
         logger.info("Retrieving credentials")
         auth_creds = service_account.Credentials.from_service_account_info(
             credentials_["credentials"],
             scopes=["https://www.googleapis.com/auth/cloud-platform"],
         )
-        auth_creds.refresh(Request())  # Refreshing access token
+        # Check if the token needs to be refreshed
+        if (
+            auth_creds.expiry is None
+            or auth_creds.expired
+            or auth_creds.expiry > datetime.now() - timedelta(minutes=5)
+        ):
+            logger.info("Refreshing access token")
+            auth_creds.refresh(Request())  # Refreshing access token
 
         if not auth_creds.token:  # Handle exception
             logger.error("Error Retrieving credentials.")
diff --git a/tests/test_download.py b/tests/test_download.py
index a18f9e1..b05f032 100644
--- a/tests/test_download.py
+++ b/tests/test_download.py
@@ -11,17 +11,13 @@
 
 # Set the log level to maximum
 os.environ["OTF_LOG_LEVEL"] = "DEBUG"
+current_dir = os.path.dirname(os.path.realpath(__file__))
+load_dotenv(dotenv_path=f"{current_dir}/../.env")
 
 bucket_source_root_definition = {
     "bucket": "bucket-test-gcpupload",
-    "directory": "postcopy",
-    "postCopyAction": {
-        "action": "rename",
-        "sub": "LOCAL",
-        "pattern": "LOCALh",
-        "destination": "postcopy1",
-    },
-    "fileExpression": "**.txt",
+    "directory": "localnested",
+    "fileRegex": ".*\\.txt",
     "protocol": {
         "name": "opentaskpy.addons.gcp.remotehandlers.bucket.BucketTransfer",
         "credentials": {},
@@ -30,7 +26,7 @@
 bucket_source_nested_definition = {
     "bucket": "bucket-test-gcpupload",
     "directory": "localnested",
-    "fileExpression": "**.txt",
+    "fileRegex": ".*\\.txt",
     "protocol": {
         "name": "opentaskpy.addons.gcp.remotehandlers.bucket.BucketTransfer",
         "credentials": {},
@@ -39,14 +35,14 @@
 bucket_source_nested_regex_definition = {
     "bucket": "bucket-test-gcpupload",
     "directory": "localnested",
-    "fileExpression": "root1dir.txt",
+    "fileRegex": ".*\\.txt",
     "protocol": {
         "name": "opentaskpy.addons.gcp.remotehandlers.bucket.BucketTransfer",
         "credentials": {},
     },
 }
 bucket_local_definition = {
-    "directory": "src/tmp/downloaded",
+    "directory": current_dir,
     "protocol": {"name": "local"},
 }
 
@@ -61,7 +57,7 @@ def gcp_creds():
         current_dir = os.path.dirname(os.path.realpath(__file__))
         load_dotenv(dotenv_path=f"{current_dir}/../.env")
 
-    with open(f"{current_dir}/testFiles/testprojectglue-2fb4b71447c4.json", "r") as f:
+    with open(f"{current_dir}/creds.json", "r") as f:
         keyR = f.read()
 
     return json.loads(keyR)
@@ -87,6 +83,11 @@ def test_gcp_nested_to_local_transfer(gcp_creds):
         "destination": [deepcopy(bucket_local_definition)],
     }
     task_definition["source"]["protocol"]["credentials"] = gcp_creds
+    task_definition["source"]["fileWatch"] = {
+        "timeout": 20,
+        "directory": "localnested",
+        "fileRegex": ".*\\.txt",
+    }
 
     transfer_obj = transfer.Transfer(None, "gcp-to-local", task_definition)
 
@@ -100,6 +101,9 @@ def test_gcp_nested_regex_to_local_transfer(gcp_creds):
         "destination": [deepcopy(bucket_local_definition)],
     }
     task_definition["source"]["protocol"]["credentials"] = gcp_creds
+    task_definition["source"]["fileWatch"] = {
+        "timeout": 20,
+    }
 
     transfer_obj = transfer.Transfer(None, "gcp-to-local", task_definition)
 
@@ -126,9 +130,8 @@ def test_gcp_file_watch(gcp_creds):
         "destination": [deepcopy(bucket_local_definition)],
     }
     task_definition["source"]["fileWatch"] = {
-        "timeout": 300,
-        "directory": "localnested",
-        "fileRegex": ".*\\.txt",
+        "timeout": 20,
+        "fileRegex": ".*\\.tx$",
     }
     task_definition["source"]["protocol"]["credentials"] = gcp_creds
     transfer_obj = transfer.Transfer(None, "gcp-to-local", task_definition)
diff --git a/tests/test_local_to_root.py b/tests/test_local_to_root.py
index f180ab4..0dde6e3 100644
--- a/tests/test_local_to_root.py
+++ b/tests/test_local_to_root.py
@@ -11,6 +11,8 @@
 
 # Set the log level to maximum
 os.environ["OTF_LOG_LEVEL"] = "DEBUG"
+current_dir = os.path.dirname(os.path.realpath(__file__))
+load_dotenv(dotenv_path=f"{current_dir}/../.env")
 
 
 bucket_destination_definition = {
@@ -33,7 +35,7 @@ def gcp_creds():
         current_dir = os.path.dirname(os.path.realpath(__file__))
         load_dotenv(dotenv_path=f"{current_dir}/../.env")
 
-    with open(f"{current_dir}/testFiles/testprojectglue-2fb4b71447c4.json", "r") as f:
+    with open(f"{current_dir}/creds.json", "r") as f:
         keyR = f.read()
 
     return json.loads(keyR)
@@ -44,7 +46,7 @@ def test_local_to_gcp_transfer(gcp_creds):
     task_definition = {
         "type": "transfer",
         "source": {
-            "directory": "src/tmp",
+            "directory": f"{current_dir}",
             "fileRegex": ".*\\.txt",
             "protocol": {"name": "local"},
         },
diff --git a/tests/test_upload_nested.py b/tests/test_upload_nested.py
index 5bf3fb1..d702627 100644
--- a/tests/test_upload_nested.py
+++ b/tests/test_upload_nested.py
@@ -11,6 +11,8 @@
 
 # Set the log level to maximum
 os.environ["OTF_LOG_LEVEL"] = "DEBUG"
+current_dir = os.path.dirname(os.path.realpath(__file__))
+load_dotenv(dotenv_path=f"{current_dir}/../.env")
 
 bucket_nested_destination_definition = {
     "bucket": "bucket-test-gcpupload",
@@ -32,7 +34,7 @@ def gcp_creds():
         current_dir = os.path.dirname(os.path.realpath(__file__))
         load_dotenv(dotenv_path=f"{current_dir}/../.env")
 
-    with open(f"{current_dir}/testFiles/testprojectglue-2fb4b71447c4.json", "r") as f:
+    with open(f"{current_dir}/creds.json", "r") as f:
         keyR = f.read()
 
     return json.loads(keyR)
@@ -42,7 +44,7 @@ def test_local_nested_to_gcp_transfer(gcp_creds):
     task_definition = {
         "type": "transfer",
         "source": {
-            "directory": "src/tmp/nested",
+            "directory": f"{current_dir}",
             "fileRegex": ".*\\.txt",
             "protocol": {"name": "local"},
         },