diff --git a/Dockerfile b/Dockerfile
index 1338b442..bc74fedf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:8.9.4@sha256:090e91ff2325ca4aa558771b7f24819825b5c8f520fb891723555bb48811f534
+FROM node:8.9.4@sha256:5afc7736a71bcf24281d9dbff878c771106e0791d56949b1a4e8d27c50424283
 
 WORKDIR /probot-app-workflow