From bd0adbbade447790c49108762bc3dfa996dd0ea0 Mon Sep 17 00:00:00 2001
From: Mark Pullin <33632490+marpulli@users.noreply.github.com>
Date: Tue, 3 Mar 2026 11:52:56 +0000
Subject: [PATCH] Use iscoroutinefunction from inspect

---
 langfuse/_client/observe.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/langfuse/_client/observe.py b/langfuse/_client/observe.py
index e8786a0e0..8082d07e9 100644
--- a/langfuse/_client/observe.py
+++ b/langfuse/_client/observe.py
@@ -195,7 +195,7 @@ def decorator(func: F) -> F:
                     capture_output=should_capture_output,
                     transform_to_string=transform_to_string,
                 )
-                if asyncio.iscoroutinefunction(func)
+                if inspect.iscoroutinefunction(func)
                 else self._sync_observe(
                     func,
                     name=name,