diff --git a/requirements_web.txt b/requirements_web.txt
index e0340930..493e426b 100644
--- a/requirements_web.txt
+++ b/requirements_web.txt
@@ -1,7 +1,8 @@
 # Use this instead to test the latest fixes on 0.12.x branch before official release
 # biothings@git+https://github.com/biothings/biothings.api@0.1.x#egg=biothings[web_extra]
 
-biothings[web_extra]==1.0.0
+biothings@git+https://github.com/biothings/biothings.api@improve-assert-validations#egg=biothings[web_extra]
+#biothings[web_extra]==1.0.0
 
 # for sentry monitoring
 raven
diff --git a/src/web/pipeline.py b/src/web/pipeline.py
index 56913b65..e4cbb980 100644
--- a/src/web/pipeline.py
+++ b/src/web/pipeline.py
@@ -1,7 +1,7 @@
 import re
 from typing import Dict, Optional
 
-from elasticsearch_dsl import Search
+from elasticsearch.dsl import Search
 from biothings.web.query import ESQueryBuilder, AsyncESQueryBackend