diff --git a/sky/setup_files/setup.py b/sky/setup_files/setup.py
index a8e1770d88f..6ab6346a329 100644
--- a/sky/setup_files/setup.py
+++ b/sky/setup_files/setup.py
@@ -135,7 +135,9 @@ def parse_readme(readme: str) -> str:
         'azure-cli>=2.31.0', 'azure-core', 'azure-identity>=1.13.0',
         'azure-mgmt-network'
     ],
-    'gcp': ['google-api-python-client', 'google-cloud-storage'],
+    # We need google-api-python-client>=2.19.1 to enable 'reason' attribute
+    # of googleapiclient.errors.HttpError, which is widely used in our system.
+    'gcp': ['google-api-python-client>=2.19.1', 'google-cloud-storage'],
     'ibm': [
         'ibm-cloud-sdk-core', 'ibm-vpc', 'ibm-platform-services', 'ibm-cos-sdk'
     ],