diff --git a/tests/build.yml b/tests/build.yml
index ff08de5d..308b821a 100644
--- a/tests/build.yml
+++ b/tests/build.yml
@@ -50,4 +50,4 @@ services:
     image: mailu/docs:$VERSION
     build:
       context: ../
-      dockerfile: docs/Dockerfile
+      dockerfile: ../docs/Dockerfile