diff --git a/local-app/python-tools/idc-membership-check/run_group_updates.py b/local-app/python-tools/idc-membership-check/run_group_updates.py
index daa9b2f6..d572b781 100755
--- a/local-app/python-tools/idc-membership-check/run_group_updates.py
+++ b/local-app/python-tools/idc-membership-check/run_group_updates.py
@@ -29,7 +29,7 @@
     --adds-only       Only process groups with add_count > 0
     --deletes-only    Only process groups with delete_count > 0
     --dry-run         Print what would run without executing anything
-    --timeout SEC     Per-group command timeout in seconds (default: 600)
+    --timeout SEC     Per-group command timeout in seconds (default: 900)
     --log-dir DIR     Directory for the run log file; created if absent (default: logs/)
 """
 
@@ -101,8 +101,8 @@ def parse_args() -> argparse.Namespace:
                    help="Only process groups with delete_count > 0")
     p.add_argument("--dry-run", action="store_true",
                    help="Print tasks without executing")
-    p.add_argument("--timeout", type=int, default=600, metavar="SEC",
-                   help="Per-group command timeout in seconds (default: 600)")
+    p.add_argument("--timeout", type=int, default=900, metavar="SEC",
+                   help="Per-group command timeout in seconds (default: 900)")
     p.add_argument("--version", action="version", version=f"%(prog)s {__version__}")
     p.add_argument("--log-dir", default="logs", metavar="DIR",
                    help="Directory for the run log file (default: logs/)")
diff --git a/local-app/python-tools/idc-membership-check/run_user_updates.py b/local-app/python-tools/idc-membership-check/run_user_updates.py
index 6a735d2f..e7ca5c81 100755
--- a/local-app/python-tools/idc-membership-check/run_user_updates.py
+++ b/local-app/python-tools/idc-membership-check/run_user_updates.py
@@ -45,7 +45,7 @@
     --csv-file PATH     Path to idc_reconcile.csv (full action report).
                         Passed as CSV_FILE env var.
     --dry-run           Print what would run without executing
-    --timeout SEC       Command timeout in seconds (default: 600)
+    --timeout SEC       Command timeout in seconds (default: 900)
     --log-dir DIR       Directory for the run log file; created if absent
                         (default: logs/)
 """
@@ -117,8 +117,8 @@ def parse_args() -> argparse.Namespace:
                    help="Path to idc_reconcile.csv; passed as CSV_FILE env var")
     p.add_argument("--dry-run", action="store_true",
                    help="Print what would run without executing")
-    p.add_argument("--timeout", type=int, default=600, metavar="SEC",
-                   help="Command timeout in seconds (default: 600)")
+    p.add_argument("--timeout", type=int, default=900, metavar="SEC",
+                   help="Command timeout in seconds (default: 900)")
     p.add_argument("--log-dir", default="logs", metavar="DIR",
                    help="Directory for the run log file; created if absent (default: logs/)")
     p.add_argument("--version", action="version", version=f"%(prog)s {__version__}")