diff --git a/datasette/publish/cloudrun.py b/datasette/publish/cloudrun.py
index 32c9cd2a..c2d77746 100644
--- a/datasette/publish/cloudrun.py
+++ b/datasette/publish/cloudrun.py
@@ -110,7 +110,7 @@ def publish_subcommand(publish):
             image_id = "gcr.io/{project}/{name}".format(project=project, name=name)
             check_call("gcloud builds submit --tag {}".format(image_id), shell=True)
         check_call(
-            "gcloud beta run deploy --allow-unauthenticated --image {}{}".format(
+            "gcloud beta run deploy --allow-unauthenticated --platform=managed --image {}{}".format(
                 image_id, " {}".format(service) if service else ""
             ),
             shell=True,
diff --git a/tests/test_publish_cloudrun.py b/tests/test_publish_cloudrun.py
index 1e9bb830..481ac04d 100644
--- a/tests/test_publish_cloudrun.py
+++ b/tests/test_publish_cloudrun.py
@@ -40,7 +40,7 @@ def test_publish_cloudrun(mock_call, mock_output, mock_which):
             [
                 mock.call("gcloud builds submit --tag {}".format(tag), shell=True),
                 mock.call(
-                    "gcloud beta run deploy --allow-unauthenticated --image {}".format(
+                    "gcloud beta run deploy --allow-unauthenticated --platform=managed --image {}".format(
                         tag
                     ),
                     shell=True,