diff --git a/backend/requirements.txt b/backend/requirements.txt
index 5b0524efa8..94badb254d 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -51,6 +51,7 @@ langchain-community==0.3.26
 
 fake-useragent==2.1.0
 chromadb==0.6.3
+posthog==5.4.0
 pymilvus==2.5.0
 qdrant-client==1.14.3
 opensearch-py==2.8.0