diff --git a/storages/backends/gcloud.py b/storages/backends/gcloud.py
index 77b3e144..de43cf7d 100644
--- a/storages/backends/gcloud.py
+++ b/storages/backends/gcloud.py
@@ -127,7 +127,7 @@ def get_default_settings(self):
             "location": setting("GS_LOCATION", ""),
             "default_acl": setting("GS_DEFAULT_ACL"),
             "querystring_auth": setting("GS_QUERYSTRING_AUTH", True),
-            "expiration": setting("GS_EXPIRATION", timedelta(seconds=86400)),
+            "expiration": setting("GS_EXPIRATION", timedelta(seconds=31536000)),
             "gzip": setting("GS_IS_GZIPPED", False),
             "gzip_content_types": setting(
                 "GZIP_CONTENT_TYPES",
@@ -330,9 +330,13 @@ def url(self, name, parameters=None):
                 quoted_name=_quote(name, safe=b"/~"),
             )
         elif not self.custom_endpoint:
-            return blob.generate_signed_url(**self.signed_url_extra())
+            return blob.generate_signed_url(
+                expiration=self.expiration,
+                **self.signed_url_extra()
+            )
         else:
             return blob.generate_signed_url(
+                expiration=self.expiration,
                 api_access_endpoint=self.custom_endpoint,
                 **self.signed_url_extra()
             )