diff --git a/README.md b/README.md
index 5a553f3b..8cab9dae 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ Then compile assets and start the local server with
 npm start
 ```
 
-On Windows with no Unix tools installed (`bash`, `sed`, `cp`) the server could be started with two other commands
+On Windows with no Unix tools installed (`bash` and `cp`) the server could be started with two other commands
 executed by `npm start` internally:
 
 ```bash
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 496cc0f2..0e72ab5f 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.5
+FROM alpine:3.21
 
 # Enables customized options using environment variables
 ENV OSRM_BACKEND='http://localhost:5000'
@@ -13,7 +13,7 @@ RUN mkdir -p /src
 COPY package.json /src
 
 # Install app dependencies
-RUN apk add --no-cache sed nodejs && \
+RUN apk add --no-cache npm && \
     cd /src && \
     npm install