diff --git a/api/configs/middleware/vdb/weaviate_config.py b/api/configs/middleware/vdb/weaviate_config.py
index 6a79412ab8..aa81c870f6 100644
--- a/api/configs/middleware/vdb/weaviate_config.py
+++ b/api/configs/middleware/vdb/weaviate_config.py
@@ -22,6 +22,11 @@ class WeaviateConfig(BaseSettings):
         default=True,
     )
 
+    WEAVIATE_GRPC_ENDPOINT: str | None = Field(
+        description="URL of the Weaviate gRPC server (e.g., 'grpc://localhost:50051' or 'grpcs://weaviate.example.com:443')",
+        default=None,
+    )
+
     WEAVIATE_BATCH_SIZE: PositiveInt = Field(
         description="Number of objects to be processed in a single batch operation (default is 100)",
         default=100,
diff --git a/api/core/rag/datasource/vdb/weaviate/weaviate_vector.py b/api/core/rag/datasource/vdb/weaviate/weaviate_vector.py
index dceade0af9..39eb91e50e 100644
--- a/api/core/rag/datasource/vdb/weaviate/weaviate_vector.py
+++ b/api/core/rag/datasource/vdb/weaviate/weaviate_vector.py
@@ -39,11 +39,13 @@ class WeaviateConfig(BaseModel):
 
     Attributes:
         endpoint: Weaviate server endpoint URL
+        grpc_endpoint: Optional Weaviate gRPC server endpoint URL
         api_key: Optional API key for authentication
         batch_size: Number of objects to batch per insert operation
     """
 
     endpoint: str
+    grpc_endpoint: str | None = None
     api_key: str | None = None
     batch_size: int = 100
 
@@ -88,9 +90,22 @@ class WeaviateVector(BaseVector):
         http_secure = p.scheme == "https"
         http_port = p.port or (443 if http_secure else 80)
 
-        grpc_host = host
-        grpc_secure = http_secure
-        grpc_port = 443 if grpc_secure else 50051
+        # Parse gRPC configuration
+        if config.grpc_endpoint:
+            # Urls without scheme won't be parsed correctly in some python verions,
+            # see https://bugs.python.org/issue27657
+            grpc_endpoint_with_scheme = (
+                config.grpc_endpoint if "://" in config.grpc_endpoint else f"grpc://{config.grpc_endpoint}"
+            )
+            grpc_p = urlparse(grpc_endpoint_with_scheme)
+            grpc_host = grpc_p.hostname or "localhost"
+            grpc_port = grpc_p.port or (443 if grpc_p.scheme == "grpcs" else 50051)
+            grpc_secure = grpc_p.scheme == "grpcs"
+        else:
+            # Infer from HTTP endpoint as fallback
+            grpc_host = host
+            grpc_secure = http_secure
+            grpc_port = 443 if grpc_secure else 50051
 
         client = weaviate.connect_to_custom(
             http_host=host,
@@ -432,6 +447,7 @@ class WeaviateVectorFactory(AbstractVectorFactory):
             collection_name=collection_name,
             config=WeaviateConfig(
                 endpoint=dify_config.WEAVIATE_ENDPOINT or "",
+                grpc_endpoint=dify_config.WEAVIATE_GRPC_ENDPOINT or "",
                 api_key=dify_config.WEAVIATE_API_KEY,
                 batch_size=dify_config.WEAVIATE_BATCH_SIZE,
             ),
diff --git a/docker/.env.example b/docker/.env.example
index 7c7a938fd9..c19084ebbf 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -492,6 +492,7 @@ VECTOR_INDEX_NAME_PREFIX=Vector_index
 # The Weaviate endpoint URL. Only available when VECTOR_STORE is `weaviate`.
 WEAVIATE_ENDPOINT=http://weaviate:8080
 WEAVIATE_API_KEY=WVF5YThaHlkYwhGUSmCRgsX3tD5ngdN8pkih
+WEAVIATE_GRPC_ENDPOINT=grpc://weaviate:50051
 
 # The Qdrant endpoint URL. Only available when VECTOR_STORE is `qdrant`.
 QDRANT_URL=http://qdrant:6333
diff --git a/docker/docker-compose.yaml b/docker/docker-compose.yaml
index fda53f8d93..1ff33a94b5 100644
--- a/docker/docker-compose.yaml
+++ b/docker/docker-compose.yaml
@@ -157,6 +157,7 @@ x-shared-env: &shared-api-worker-env
   VECTOR_INDEX_NAME_PREFIX: ${VECTOR_INDEX_NAME_PREFIX:-Vector_index}
   WEAVIATE_ENDPOINT: ${WEAVIATE_ENDPOINT:-http://weaviate:8080}
   WEAVIATE_API_KEY: ${WEAVIATE_API_KEY:-WVF5YThaHlkYwhGUSmCRgsX3tD5ngdN8pkih}
+  WEAVIATE_GRPC_ENDPOINT: ${WEAVIATE_GRPC_ENDPOINT:-grpc://weaviate:50051}
   QDRANT_URL: ${QDRANT_URL:-http://qdrant:6333}
   QDRANT_API_KEY: ${QDRANT_API_KEY:-difyai123456}
   QDRANT_CLIENT_TIMEOUT: ${QDRANT_CLIENT_TIMEOUT:-20}