diff --git a/stacks/matrix.yml b/stacks/matrix.yml
index 23cddfb..fe2b8b2 100644
--- a/stacks/matrix.yml
+++ b/stacks/matrix.yml
@@ -26,6 +26,8 @@ services:
     configs:
       - source: conduit_v6
         target: '/srv/conduit/conduit.toml'
+    environment:
+      - 'CONDUIT_CONFIG=/srv/conduit/conduit.toml'
     networks:
       - 'default'
       - 'public'