diff --git a/langfuse/langchain/CallbackHandler.py b/langfuse/langchain/CallbackHandler.py
index db90f10a0..fe6035e54 100644
--- a/langfuse/langchain/CallbackHandler.py
+++ b/langfuse/langchain/CallbackHandler.py
@@ -370,11 +370,6 @@ def on_agent_action(
                     LangfuseOtelSpanAttributes.OBSERVATION_TYPE, "agent"
                 )
 
-            agent_run.update(
-                output=action,
-                input=kwargs.get("inputs"),
-            ).end()
-
         except Exception as e:
             langfuse_logger.exception(e)
 
@@ -399,11 +394,6 @@ def on_agent_finish(
                     LangfuseOtelSpanAttributes.OBSERVATION_TYPE, "agent"
                 )
 
-            agent_run.update(
-                output=finish,
-                input=kwargs.get("inputs"),
-            ).end()
-
         except Exception as e:
             langfuse_logger.exception(e)