diff --git a/docker-compose.yml b/docker-compose.yml
index a0cbb3b..d80420b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,11 +6,5 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
     command: --interval 30
-    environment:
-      - WATCHTOWER_NOTIFICATION_SLACK_CHANNEL=#alerts
-      - WATCHTOWER_NOTIFICATION_SLACK_HOOK_URL=https://hooks.slack.com/services/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
-      - WATCHTOWER_NOTIFICATION_SLACK_IDENTIFIER=watchtower-zway
-      - WATCHTOWER_NOTIFICATIONS=slack
-      - WATCHTOWER_POLL_INTERVAL=60
-      - WATCHTOWER_RUN_ONCE=false
-      - WATCHTOWER_WARN_ON_HEAD_FAILURE=never
+      env_file:
+        - stack.env
diff --git a/stack.env b/stack.env
new file mode 100644
index 0000000..875eecf
--- /dev/null
+++ b/stack.env
@@ -0,0 +1,7 @@
+WATCHTOWER_NOTIFICATION_SLACK_CHANNEL=#alerts
+WATCHTOWER_NOTIFICATION_SLACK_HOOK_URL=https://hooks.slack.com/services/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
+WATCHTOWER_NOTIFICATION_SLACK_IDENTIFIER=watchtower-zway
+WATCHTOWER_NOTIFICATIONS=slack
+WATCHTOWER_POLL_INTERVAL=60
+WATCHTOWER_RUN_ONCE=false
+WATCHTOWER_WARN_ON_HEAD_FAILURE=never