diff --git a/compose.imaginary-preview.yml b/compose.imaginary-preview.yml
index 5ddd165..21495da 100644
--- a/compose.imaginary-preview.yml
+++ b/compose.imaginary-preview.yml
@@ -1,5 +1,5 @@
 ---
-version: '3.1'
+version: '3.8'
 services:
   imaginary:
     image: nextcloud/aio-imaginary:20250822_112758