diff --git a/clusters/app.ci/prow/02_config/_config.yaml b/clusters/app.ci/prow/02_config/_config.yaml
index 9dc7c38e659f..67f4c70f7b49 100644
--- a/clusters/app.ci/prow/02_config/_config.yaml
+++ b/clusters/app.ci/prow/02_config/_config.yaml
@@ -364,7 +364,7 @@ plank:
           log: text/plain
         path_strategy: single
       gcs_credentials_secret: gce-sa-credentials-gcs-publisher
-      grace_period: 1m0s
+      grace_period: 15m0s
       resources:
         clonerefs:
           limits:
diff --git a/core-services/prow/02_config/_config.yaml b/core-services/prow/02_config/_config.yaml
index 9dc7c38e659f..67f4c70f7b49 100644
--- a/core-services/prow/02_config/_config.yaml
+++ b/core-services/prow/02_config/_config.yaml
@@ -364,7 +364,7 @@ plank:
           log: text/plain
         path_strategy: single
       gcs_credentials_secret: gce-sa-credentials-gcs-publisher
-      grace_period: 1m0s
+      grace_period: 15m0s
       resources:
         clonerefs:
           limits: