diff --git a/libs/community/langchain_community/document_loaders/pdf.py b/libs/community/langchain_community/document_loaders/pdf.py
index 30615d3e7a3ae..600eb26bd0b0b 100644
--- a/libs/community/langchain_community/document_loaders/pdf.py
+++ b/libs/community/langchain_community/document_loaders/pdf.py
@@ -518,7 +518,7 @@ def load(self) -> List[Document]:
         contents = self.get_processed_pdf(pdf_id)
         if self.should_clean_pdf:
             contents = self.clean_pdf(contents)
-        metadata = {"source": self.source, "file_path": self.source}
+        metadata = {"source": self.source, "file_path": self.source, "pdf_id": pdf_id}
         return [Document(page_content=contents, metadata=metadata)]