diff --git a/Dockerfile b/Dockerfile
index 832a983e5d..bab59df050 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:14-buster-slim
+FROM node:14-buster-slim@sha256:5fc18b7895980374c592ba1b077e70024bba6d890fc4479b2138f7a22e35e497
 
 WORKDIR /app