diff --git a/ng.Dockerfile b/ng.Dockerfile
index dd389c6..e9adf4f 100644
--- a/ng.Dockerfile
+++ b/ng.Dockerfile
@@ -5,8 +5,8 @@ RUN apk update
 RUN apk add --no-cache nodejs
 RUN apk add --no-cache npm
 
-RUN npm install -g typescript
-RUN npm install -g @angular/cli || true
+RUN npm install -g typescript@4.0.7
+RUN npm install -g @angular/cli@11.2.9 || true
 
 ENV NG_CLI_ANALYTICS=ci