diff --git a/tests/_test_helpers/ENV_SETTING.py b/tests/_test_helpers/ENV_SETTING.py
index 5d1c4e7..317c532 100644
--- a/tests/_test_helpers/ENV_SETTING.py
+++ b/tests/_test_helpers/ENV_SETTING.py
@@ -1,7 +1,7 @@
 import json
 import os
 
-TAG = "latest"
+TAG = "2.3.0"
 TESTNET_TAG = "2.3.0-3-testnet"
 REPO_NAME = "confluxchain/conflux-rust"
 DEV_IMAGE_FULL_NAME = f"{REPO_NAME}:{TAG}"
diff --git a/tests/rpcs/test_cfx_rpcs.py b/tests/rpcs/test_cfx_rpcs.py
index 8aab6a9..897576c 100644
--- a/tests/rpcs/test_cfx_rpcs.py
+++ b/tests/rpcs/test_cfx_rpcs.py
@@ -359,7 +359,7 @@ def block_filter_id(self, moduled_w3: Web3) -> BlockFilterId:
         return moduled_w3.cfx.new_block_filter()
 
     def test_block_filter(self, moduled_w3: Web3, block_filter_id: BlockFilterId):
-        time.sleep(2)
+        time.sleep(5)
         new_blocks = moduled_w3.cfx.get_filter_changes(block_filter_id)
         # new_blocks = moduled_w3.manager.request_blocking(
         #     "cfx_getFilterChanges", [block_filter_id]