diff --git a/build/docker/Dockerfile.demo-pinecone b/build/docker/Dockerfile.demo-pinecone
index facd1e3af..90f515167 100644
--- a/build/docker/Dockerfile.demo-pinecone
+++ b/build/docker/Dockerfile.demo-pinecone
@@ -17,6 +17,7 @@ RUN go build -trimpath -o bin/ ./cmd/create-account
 RUN go build -trimpath -o bin/ ./cmd/generate-keys
 
 FROM alpine:latest
+RUN apk --update --no-cache add curl
 LABEL org.opencontainers.image.title="Dendrite (Pinecone demo)"
 LABEL org.opencontainers.image.description="Next-generation Matrix homeserver written in Go"
 LABEL org.opencontainers.image.source="https://github.com/matrix-org/dendrite"