diff --git a/README.md b/README.md
index e1b8bf6..8dbe26d 100644
--- a/README.md
+++ b/README.md
@@ -26,4 +26,4 @@ Creates a pull request in the current directory's repo.
 
 ### Outputs
 
-- `pr-url`: URL of created PR
+- `pr_url`: URL of created PR