diff --git a/Dockerfile b/Dockerfile
index 1f3bda8c3..6131c3e9d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:8-alpine as nodejs-builder
+FROM node:8.11.4-alpine as nodejs-builder
 RUN apk add --update make git
 COPY . /karma
 RUN make -C /karma ui
diff --git a/demo/Dockerfile b/demo/Dockerfile
index 956b7eb90..8f0b41f5a 100644
--- a/demo/Dockerfile
+++ b/demo/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:8-alpine as nodejs-builder
+FROM node:8.11.4-alpine as nodejs-builder
 RUN apk add --update make git
 COPY . /karma
 RUN make -C /karma ui