diff --git a/community/pdfspeak/webapp/src/main/backend/requirements.txt b/community/pdfspeak/webapp/src/main/backend/requirements.txt
index 78fe53d4d..1889492e7 100644
--- a/community/pdfspeak/webapp/src/main/backend/requirements.txt
+++ b/community/pdfspeak/webapp/src/main/backend/requirements.txt
@@ -1,7 +1,7 @@
 PyMuPDF==1.25.3
 Flask==3.1.0
 Flask_Cors==5.0.0
-langchain_core==0.3.34
+langchain_core==0.3.81
 langchain_milvus==0.1.8
 langchain_nvidia_ai_endpoints==0.3.9
 nvidia_riva_client==2.18.0