diff --git a/mix/Dockerfile b/mix/Dockerfile
index 883e95d..7410a56 100644
--- a/mix/Dockerfile
+++ b/mix/Dockerfile
@@ -5,7 +5,7 @@ LABEL maintainer="ProcessOne <contact@process-one.net>" \
 # Install required dependencies
 RUN apk upgrade --update musl \
  && apk add build-base git zlib-dev openssl-dev yaml-dev expat-dev sqlite-dev \
-            gd-dev jpeg-dev libpng-dev libwebp-dev \
+            gd-dev jpeg-dev libpng-dev libwebp-dev autoconf automake \
             elixir erlang-crypto erlang-eunit erlang-mnesia erlang-erts erlang-hipe \
             erlang-tools erlang-os-mon erlang-syntax-tools erlang-parsetools \
             erlang-runtime-tools erlang-reltool file curl \