diff --git a/Dockerfile b/Dockerfile
index 832a983e5d..d25cd1206e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:14-buster-slim
+FROM node:14-buster-slim@sha256:198142146b4c47193348f6415da769bdb5035c16fcab051c38c256a6b48f2e1c
 
 WORKDIR /app