diff --git a/stacks/agents.yml b/stacks/agents.yml
index d7d7c87..a48498d 100644
--- a/stacks/agents.yml
+++ b/stacks/agents.yml
@@ -107,7 +107,7 @@ services:
       # Tool execution settings
       - TOOL_TIMEOUT_SECONDS=30
       - SANDBOX_ENABLED=true
-      - ALLOWED_PATHS=/app/sandbox,/tmp
+      - ALLOWED_PATHS=["/app/sandbox","/tmp"]
       # Session management
       - SESSION_TTL_HOURS=24
       - MAX_CONTEXT_TOKENS=8192