diff --git a/langfuse/api/reference.md b/langfuse/api/reference.md
index 5f6371b51..8a8dad23c 100644
--- a/langfuse/api/reference.md
+++ b/langfuse/api/reference.md
@@ -7167,6 +7167,14 @@ client.score_v_2.get()
 <dl>
 <dd>
 
+**observation_id:** `typing.Optional[str]` — Comma-separated list of observation IDs to filter scores by.
+    
+</dd>
+</dl>
+
+<dl>
+<dd>
+
 **queue_id:** `typing.Optional[str]` — Retrieve only scores with a specific annotation queueId.
     
 </dd>
diff --git a/langfuse/api/resources/score_v_2/client.py b/langfuse/api/resources/score_v_2/client.py
index 2a1295432..7372a7784 100644
--- a/langfuse/api/resources/score_v_2/client.py
+++ b/langfuse/api/resources/score_v_2/client.py
@@ -43,6 +43,7 @@ def get(
         session_id: typing.Optional[str] = None,
         dataset_run_id: typing.Optional[str] = None,
         trace_id: typing.Optional[str] = None,
+        observation_id: typing.Optional[str] = None,
         queue_id: typing.Optional[str] = None,
         data_type: typing.Optional[ScoreDataType] = None,
         trace_tags: typing.Optional[typing.Union[str, typing.Sequence[str]]] = None,
@@ -99,6 +100,9 @@ def get(
         trace_id : typing.Optional[str]
             Retrieve only scores with a specific traceId.
 
+        observation_id : typing.Optional[str]
+            Comma-separated list of observation IDs to filter scores by.
+
         queue_id : typing.Optional[str]
             Retrieve only scores with a specific annotation queueId.
 
@@ -155,6 +159,7 @@ def get(
                 "sessionId": session_id,
                 "datasetRunId": dataset_run_id,
                 "traceId": trace_id,
+                "observationId": observation_id,
                 "queueId": queue_id,
                 "dataType": data_type,
                 "traceTags": trace_tags,
@@ -276,6 +281,7 @@ async def get(
         session_id: typing.Optional[str] = None,
         dataset_run_id: typing.Optional[str] = None,
         trace_id: typing.Optional[str] = None,
+        observation_id: typing.Optional[str] = None,
         queue_id: typing.Optional[str] = None,
         data_type: typing.Optional[ScoreDataType] = None,
         trace_tags: typing.Optional[typing.Union[str, typing.Sequence[str]]] = None,
@@ -332,6 +338,9 @@ async def get(
         trace_id : typing.Optional[str]
             Retrieve only scores with a specific traceId.
 
+        observation_id : typing.Optional[str]
+            Comma-separated list of observation IDs to filter scores by.
+
         queue_id : typing.Optional[str]
             Retrieve only scores with a specific annotation queueId.
 
@@ -396,6 +405,7 @@ async def main() -> None:
                 "sessionId": session_id,
                 "datasetRunId": dataset_run_id,
                 "traceId": trace_id,
+                "observationId": observation_id,
                 "queueId": queue_id,
                 "dataType": data_type,
                 "traceTags": trace_tags,