diff --git a/Dockerfile b/Dockerfile
index 832a983e5d..abb8978ca6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:14-buster-slim
+FROM node:14-buster-slim@sha256:7426aa64bdffbd354e22b1931afbde87206bbf86dc8bce9e6aed8789004fbc39
 
 WORKDIR /app