diff --git a/backend/requirements.txt b/backend/requirements.txt
index 9cc4938c0a..44086e63db 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -115,7 +115,7 @@ pgvector==0.4.1
 PyMySQL==1.1.1
 boto3==1.40.5
 
-pymilvus==2.6.2
+pymilvus==2.6.4
 qdrant-client==1.14.3
 playwright==1.49.1 # Caution: version must match docker-compose.playwright.yaml
 elasticsearch==9.1.0
diff --git a/pyproject.toml b/pyproject.toml
index 243ac462cf..94f5abc3c9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -148,7 +148,7 @@ all = [
 
     "qdrant-client==1.14.3",
     "weaviate-client==4.17.0",
-    "pymilvus==2.6.2",
+    "pymilvus==2.6.4",
     "pinecone==6.0.2",
     "oracledb==3.2.0",
     "colbert-ai==0.2.21",