diff --git a/post-release/Dockerfile b/post-release/Dockerfile
index 63420f8..b212199 100644
--- a/post-release/Dockerfile
+++ b/post-release/Dockerfile
@@ -16,7 +16,7 @@
 #  specific language governing permissions and limitations
 #  under the License.
 #
-FROM alpine:3@sha256:a2d49ea686c2adfe3c992e47dc3b5e7fa6e6b5055609400dc2acaeb241c829f4
+FROM alpine:3@sha256:28bd5fe8b56d1bd048e5babf5b10710ebe0bae67db86916198a6eec434943f8b
 
 RUN apk add --no-cache curl jq git bash ca-certificates github-cli