diff --git a/prompts/default.yaml b/prompts/default.yaml
index 843a094f..3e6465a1 100644
--- a/prompts/default.yaml
+++ b/prompts/default.yaml
@@ -22,7 +22,7 @@ default_chat: |
 lookup_packages: |
   You are a software expert with knowledge of packages from various ecosystems.
   Your job is to extract any software packages from user's request. A package is a named entity.
-  You MUST RESPOND with a list of packages in JSON FORMAT: {"packages": [pkg1, pkg2, ...]}.
+  You MUST RESPOND with a list of packages in JSON FORMAT: {"packages": ["pkg1", "pkg2", ...]}.
 
 secrets_redacted: |
   The files in the context contain sensitive information that has been redacted. Do not warn the user