diff --git a/docker-compose.yaml b/docker-compose.yaml
index fd79b1283e4f6d5197e5b5ec414df222efb4c5f2..a0a94093c7066ea260b922a50ef0b3d8db0abea3 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -6,6 +6,7 @@ services:
       - PUBLIC_API_URL=https://languagelab.be/tmp-api
       - PUBLIC_API_PROXY=https://languagelab.be/tmp-api
       - PUBLIC_APP_URL=https://languagelab.be
+      - PUBLIC_WS_URL=wss://languagelab.be/tmp-api/v1/ws
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro