diff --git a/docker-compose.yaml b/docker-compose.yaml
index 4080638..8888f53 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -11,4 +11,4 @@ services:
             - ./data/piston:/piston
         tmpfs:
             - /piston/jobs:exec
-            - /tmp
+            - /tmp:exec