diff --git a/Dockerfile b/Dockerfile
index 27ba71f..f43982f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM rust:alpine as builder
 
 # openssl not found -> openssl and openssl-dev
 # #include <stdlib.h> -> musl-dev
-RUN apk add openssl openssl-dev musl-dev
+RUN apk add musl-dev libressl-dev
 
 # --root dir:     Directory to install packages into.
 RUN cargo install --root /build --bin httplz https