diff --git a/testing/docker-compose.yaml b/testing/docker-compose.yaml
index e8e399e..652261b 100644
--- a/testing/docker-compose.yaml
+++ b/testing/docker-compose.yaml
@@ -12,8 +12,7 @@ services:
       POSTGRESQL_SHARED_PRELOAD_LIBRARIES: pg_cron
     ports:
       - "5431:5432"
-    volumes:
-      - postgres_data:/var/lib/postgresql/data
+    shm_size: '1gb'
   app:
     build:
       context: .