diff --git a/Dockerfile b/Dockerfile
index 572a739..a46d12a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM alpine:3.6
 
 RUN apk --no-cache add \
-    ca-certificates
+    ca-certificates curl
 
 RUN mkdir /config
 RUN mkdir /tls