diff --git a/ci/src/slack-message-handler/builder.mjs b/ci/src/slack-message-handler/builder.mjs
index 4020df87..a36b9540 100644
--- a/ci/src/slack-message-handler/builder.mjs
+++ b/ci/src/slack-message-handler/builder.mjs
@@ -109,7 +109,7 @@ export async function statusBlocks(event) {
           // The image tag (truncated), like
           // 165df6a
           const tag = imageName
-            .match(/:([a-z\-]+)?([a-f0-9]+)(-[a-z0-9_]+)?$/)
+            .match(/:([a-z\-]+)?([a-f0-9]+)(-[a-z0-9_]+)?$/)[2]
             .substring(0, 7);
 
           const ecrUrl = `https://${region}.console.aws.amazon.com/ecr/repositories/private/${accountId}/${repoName}?region=${region}`;