diff --git a/pyproject.toml b/pyproject.toml
index a24fc32a..d9106ecc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -93,7 +93,8 @@ offline-storage = [
     # Storage backend dependencies
     "redis>=5.0.0",
     "neo4j>=5.0.0",
-    "pymilvus==2.5.2",
+    "pymilvus>=2.6.2",
+    "protobuf>=5.27.2,<6.0.0",  # Required for pymilvus compatibility
     "pymongo>=4.0.0",
     "asyncpg>=0.29.0",
     "qdrant-client>=1.7.0",
diff --git a/requirements-offline-storage.txt b/requirements-offline-storage.txt
index 418e9878..40cf467e 100644
--- a/requirements-offline-storage.txt
+++ b/requirements-offline-storage.txt
@@ -6,7 +6,8 @@
 
 asyncpg>=0.29.0
 neo4j>=5.0.0
-pymilvus==2.5.2
+pymilvus>=2.6.2
+protobuf>=5.27.2,<6.0.0  # Required for pymilvus compatibility
 pymongo>=4.0.0
 qdrant-client>=1.7.0
 # Storage backend dependencies