diff --git a/ads/jobs/serializer.py b/ads/jobs/serializer.py
index 4c475fdb9..f0493b280 100644
--- a/ads/jobs/serializer.py
+++ b/ads/jobs/serializer.py
@@ -12,11 +12,9 @@
 import yaml
 from ads.common.auth import default_signer
 
+# Special type to represent the current enclosed class.
+# This type is used by factory class method or when a method returns ``self``.
 Self = TypeVar("Self", bound="Serializable")
-"""Special type to represent the current enclosed class.
-
-This type is used by factory class method or when a method returns ``self``.
-"""
 
 
 class Serializable(ABC):
@@ -72,6 +70,14 @@ def _write_to_file(s: str, uri: str, **kwargs) -> None:
                     "if you wish to overwrite."
                 )
 
+        # Add default signer if the uri is an object storage uri, and
+        # the user does not specify config or signer.
+        if (
+            uri.startswith("oci://")
+            and "config" not in kwargs
+            and "signer" not in kwargs
+        ):
+            kwargs.update(default_signer())
         with fsspec.open(uri, "w", **kwargs) as f:
             f.write(s)
 
diff --git a/pyproject.toml b/pyproject.toml
index 28560e6e0..045599f60 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ dependencies = [
   "asteval>=0.9.25",
   "cerberus>=1.3.4",
   "cloudpickle>=1.6.0",
-  "fsspec>=0.8.7",
+  "fsspec>=0.8.7,<2023.9.1",  # v2.9.1 introduced issues, releved by unit tests
   "gitpython>=3.1.2",
   "jinja2>=2.11.2",
   "matplotlib>=3.1.3",
diff --git a/tests/integration/jobs/test_dsc_job.py b/tests/integration/jobs/test_dsc_job.py
index e317de67e..2cbd616ee 100644
--- a/tests/integration/jobs/test_dsc_job.py
+++ b/tests/integration/jobs/test_dsc_job.py
@@ -222,11 +222,10 @@ def assert_job_creation(self, job, expected_infra_spec, expected_runtime_spec):
         random.seed(threading.get_ident() + os.getpid())
         random_suffix = "".join(random.choices(string.ascii_uppercase, k=6))
         yaml_uri = f"oci://{self.BUCKET}@{self.NAMESPACE}/tests/{timestamp}/example_job_{random_suffix}.yaml"
-        config_path = "~/.oci/config"
-        job.to_yaml(uri=yaml_uri, config=config_path)
+        job.to_yaml(uri=yaml_uri)
         print(f"Job YAML saved to {yaml_uri}")
         try:
-            job = Job.from_yaml(uri=yaml_uri, config=config_path)
+            job = Job.from_yaml(uri=yaml_uri)
         except Exception:
             self.fail(f"Failed to load job from YAML\n{traceback.format_exc()}")