diff --git a/.github/workflows/lint_and_test.yml b/.github/workflows/lint_and_test.yml
index 48ca0b1..71e4ac8 100644
--- a/.github/workflows/lint_and_test.yml
+++ b/.github/workflows/lint_and_test.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     env:
-      COMPOSE_FILE: ./docker/docker-compose.ci.yml
+      COMPOSE_FILE: ./docker-compose.ci.yml
 
     steps:
       - name: Checkout code
diff --git a/docker-compose.yml b/docker-compose.yml
index 53a49ce..bb5464b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,9 +1,8 @@
-version: '3'
 services:
   phx:
     build:
       context: .
-      dockerfile: ./dev.Dockerfile
+      dockerfile: ./docker/dev.Dockerfile
     volumes:
       - '.:/app'
     ports:
diff --git a/docker/docker-compose.ci.yml b/docker/docker-compose.ci.yml
index 7d52a21..1426b99 100644
--- a/docker/docker-compose.ci.yml
+++ b/docker/docker-compose.ci.yml
@@ -1,9 +1,8 @@
-version: '3'
 services:
   phx:
     build:
       context: .
-      dockerfile: ./docker/dev.Dockerfile
+      dockerfile: ./dev.Dockerfile
     environment:
       - MIX_ENV=test
     volumes: