diff --git a/libs/langchain/langchain/vectorstores/pgvector.py b/libs/langchain/langchain/vectorstores/pgvector.py
index 1e8456718a..6e6bdcead7 100644
--- a/libs/langchain/langchain/vectorstores/pgvector.py
+++ b/libs/langchain/langchain/vectorstores/pgvector.py
@@ -762,6 +762,7 @@ class PGVector(VectorStore):
             k=k,
             fetch_k=fetch_k,
             lambda_mult=lambda_mult,
+            filter=filter,
             **kwargs,
         )