diff --git a/Dockerfile b/Dockerfile
index 744fe24..c3ef595 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,4 +25,4 @@ WORKDIR /app
 RUN mix local.hex --force
 RUN mix local.rebar --force
 
-CMD mix run --no-halt
+CMD mix deps.get && mix run --no-halt
diff --git a/docker-compose.yml b/docker-compose.yml
index 67f0a59..b5a4d1c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,5 +7,6 @@ services:
       - ".:/app"
       # ignore build data
       - "/app/_build"
+      - "/app/deps"
     working_dir: "/app"
     restart: always