diff --git a/src/functions/api.rs b/src/functions/api.rs
index d0c373c2..efc983db 100644
--- a/src/functions/api.rs
+++ b/src/functions/api.rs
@@ -85,18 +85,32 @@ pub async fn get_function_by_slug(
client: &ApiClient,
project_id: &str,
slug: &str,
+ version: Option<&str>,
) -> Result