diff --git a/backend/requirements.txt b/backend/requirements.txt
index 6705750..6c1aac2 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -36,7 +36,7 @@ pygments==2.1.3
 lxml==4.3.2
 paginate==0.5.4
 paginate-sqlalchemy==0.2.0
-pyelasticsearch==1.4
+elasticsearch>=2.0.0,<3.0.0
 six>=1.10.0
 mock==1.0.1
 itsdangerous==1.1.0
diff --git a/backend/src/appenlight/__init__.py b/backend/src/appenlight/__init__.py
index fe08b01..0e0700e 100644
--- a/backend/src/appenlight/__init__.py
+++ b/backend/src/appenlight/__init__.py
@@ -16,7 +16,7 @@
 
 import datetime
 import logging
-import pyelasticsearch
+from elasticsearch import Elasticsearch
 import redis
 import os
 import pkg_resources
@@ -150,7 +150,7 @@ def main(global_config, **settings):
     redis_url = settings['redis.url']
     log.warning('Elasticsearch server list: {}'.format(es_server_list))
     log.warning('Redis server: {}'.format(redis_url))
-    config.registry.es_conn = pyelasticsearch.ElasticSearch(es_server_list)
+    config.registry.es_conn = Elasticsearch(es_server_list)
     config.registry.redis_conn = redis.StrictRedis.from_url(redis_url)
 
     config.registry.redis_lockmgr = Redlock([settings['redis.redlock.url'], ],
diff --git a/backend/src/appenlight/celery/tasks.py b/backend/src/appenlight/celery/tasks.py
index c44cb98..a804224 100644
--- a/backend/src/appenlight/celery/tasks.py
+++ b/backend/src/appenlight/celery/tasks.py
@@ -20,7 +20,8 @@ import math
 from datetime import datetime, timedelta
 
 import sqlalchemy as sa
-import pyelasticsearch
+import elasticsearch.exceptions
+import elasticsearch.helpers
 
 from celery.utils.log import get_task_logger
 from zope.sqlalchemy import mark_changed
@@ -226,22 +227,29 @@ def add_reports(resource_id, request_params, dataset, **kwargs):
 @celery.task(queue="es", default_retry_delay=600, max_retries=144)
 def add_reports_es(report_group_docs, report_docs):
     for k, v in report_group_docs.items():
-        Datastores.es.bulk_index(k, 'report_group', v, id_field="_id")
+        to_update = {'_index': k, '_type': 'report_group'}
+        [i.update(to_update) for i in v]
+        elasticsearch.helpers.bulk(Datastores.es, v)
     for k, v in report_docs.items():
-        Datastores.es.bulk_index(k, 'report', v, id_field="_id",
-                                 parent_field='_parent')
+        to_update = {'_index': k, '_type': 'report'}
+        [i.update(to_update) for i in v]
+        elasticsearch.helpers.bulk(Datastores.es, v)
 
 
 @celery.task(queue="es", default_retry_delay=600, max_retries=144)
 def add_reports_slow_calls_es(es_docs):
     for k, v in es_docs.items():
-        Datastores.es.bulk_index(k, 'log', v)
+        to_update = {'_index': k, '_type': 'log'}
+        [i.update(to_update) for i in v]
+        elasticsearch.helpers.bulk(Datastores.es, v)
 
 
 @celery.task(queue="es", default_retry_delay=600, max_retries=144)
 def add_reports_stats_rows_es(es_docs):
     for k, v in es_docs.items():
-        Datastores.es.bulk_index(k, 'log', v)
+        to_update = {'_index': k, '_type': 'log'}
+        [i.update(to_update) for i in v]
+        elasticsearch.helpers.bulk(Datastores.es, v)
 
 
 @celery.task(queue="logs", default_retry_delay=600, max_retries=144)
@@ -304,12 +312,12 @@ def add_logs(resource_id, request_params, dataset, **kwargs):
                 # batch this to avoid problems with default ES bulk limits
                 for es_index in es_docs_to_delete.keys():
                     for batch in in_batches(es_docs_to_delete[es_index], 20):
-                        query = {'terms': {'delete_hash': batch}}
+                        query = {"query": {'terms': {'delete_hash': batch}}}
 
                         try:
-                            Datastores.es.delete_by_query(
-                                es_index, 'log', query)
-                        except pyelasticsearch.ElasticHttpNotFoundError as exc:
+                            Datastores.es.transport.perform_request(
+                                "DELETE", '/{}/{}/_query'.format(es_index, 'log'), body=query)
+                        except elasticsearch.exceptions.NotFoundError as exc:
                             msg = 'skipping index {}'.format(es_index)
                             log.info(msg)
 
@@ -349,7 +357,9 @@ def add_logs(resource_id, request_params, dataset, **kwargs):
 @celery.task(queue="es", default_retry_delay=600, max_retries=144)
 def add_logs_es(es_docs):
     for k, v in es_docs.items():
-        Datastores.es.bulk_index(k, 'log', v)
+        to_update = {'_index': k, '_type': 'log'}
+        [i.update(to_update) for i in v]
+        elasticsearch.helpers.bulk(Datastores.es, v)
 
 
 @celery.task(queue="metrics", default_retry_delay=600, max_retries=144)
@@ -627,8 +637,6 @@ def logs_cleanup(resource_id, filter_settings):
     request = get_current_request()
     request.tm.begin()
     es_query = {
-        "_source": False,
-        "size": 5000,
         "query": {
             "filtered": {
                 "filter": {
@@ -646,27 +654,4 @@ def logs_cleanup(resource_id, filter_settings):
         )
     query.delete(synchronize_session=False)
     request.tm.commit()
-    result = request.es_conn.search(es_query, index='rcae_l_*',
-                                    doc_type='log', es_scroll='1m',
-                                    es_search_type='scan')
-    scroll_id = result['_scroll_id']
-    while True:
-        log.warning('log_cleanup, app:{} ns:{} batch'.format(
-            resource_id,
-            filter_settings['namespace']
-        ))
-        es_docs_to_delete = []
-        result = request.es_conn.send_request(
-            'POST', ['_search', 'scroll'],
-            body=scroll_id, query_params={"scroll": '1m'})
-        scroll_id = result['_scroll_id']
-        if not result['hits']['hits']:
-            break
-        for doc in result['hits']['hits']:
-            es_docs_to_delete.append({"id": doc['_id'],
-                                      "index": doc['_index']})
-
-        for batch in in_batches(es_docs_to_delete, 10):
-            Datastores.es.bulk([Datastores.es.delete_op(doc_type='log',
-                                                        **to_del)
-                                for to_del in batch])
+    Datastores.es.transport.perform_request("DELETE", '/{}/{}/_query'.format('rcae_l_*', 'log'), body=es_query)
diff --git a/backend/src/appenlight/lib/api.py b/backend/src/appenlight/lib/api.py
index a2106f5..d87efe0 100644
--- a/backend/src/appenlight/lib/api.py
+++ b/backend/src/appenlight/lib/api.py
@@ -19,7 +19,6 @@ import logging
 
 from pyramid.httpexceptions import HTTPForbidden, HTTPTooManyRequests
 
-from appenlight.models import Datastores
 from appenlight.models.services.config import ConfigService
 from appenlight.lib.redis_keys import REDIS_KEYS
 
diff --git a/backend/src/appenlight/lib/utils/__init__.py b/backend/src/appenlight/lib/utils/__init__.py
index e986343..3260f39 100644
--- a/backend/src/appenlight/lib/utils/__init__.py
+++ b/backend/src/appenlight/lib/utils/__init__.py
@@ -189,7 +189,7 @@ def es_index_name_limiter(start_date=None, end_date=None, months_in_past=6,
 
     # should be cached later
     def get_possible_names():
-        return list(Datastores.es.aliases().keys())
+        return list(Datastores.es.indices.get_alias('*'))
 
     possible_names = get_possible_names()
     es_index_types = []
diff --git a/backend/src/appenlight/models/__init__.py b/backend/src/appenlight/models/__init__.py
index 3ad155a..6810002 100644
--- a/backend/src/appenlight/models/__init__.py
+++ b/backend/src/appenlight/models/__init__.py
@@ -66,11 +66,11 @@ class SliceableESQuery(object):
 
     def __getitem__(self, index):
         config = self.kwconfig.copy()
-        config['es_from'] = index.start
+        config['from_'] = index.start
         query = self.query.copy()
         if self.sort_query:
             query.update(self.sort_query)
-        self.result = Datastores.es.search(query, size=self.items_per_page,
+        self.result = Datastores.es.search(body=query, size=self.items_per_page,
                                            **config)
         if self.aggregations:
             self.items = self.result.get('aggregations')
@@ -85,7 +85,7 @@ class SliceableESQuery(object):
     def __len__(self):
         config = self.kwconfig.copy()
         query = self.query.copy()
-        self.result = Datastores.es.search(query, size=self.items_per_page,
+        self.result = Datastores.es.search(body=query, size=self.items_per_page,
                                            **config)
         if self.aggregations:
             self.items = self.result.get('aggregations')
diff --git a/backend/src/appenlight/models/report.py b/backend/src/appenlight/models/report.py
index b3dc2c5..9d90192 100644
--- a/backend/src/appenlight/models/report.py
+++ b/backend/src/appenlight/models/report.py
@@ -310,7 +310,7 @@ class Report(Base, BaseModel):
                 {"_doc": {"order": "desc"}},
             ],
         }
-        result = request.es_conn.search(query, index=self.partition_id,
+        result = request.es_conn.search(body=query, index=self.partition_id,
                                         doc_type='report')
         if result['hits']['total']:
             return result['hits']['hits'][0]['_source']['pg_id']
@@ -330,7 +330,7 @@ class Report(Base, BaseModel):
                 {"_doc": {"order": "asc"}},
             ],
         }
-        result = request.es_conn.search(query, index=self.partition_id,
+        result = request.es_conn.search(body=query, index=self.partition_id,
                                         doc_type='report')
         if result['hits']['total']:
             return result['hits']['hits'][0]['_source']['pg_id']
@@ -505,8 +505,8 @@ def after_update(mapper, connection, target):
 
 def after_delete(mapper, connection, target):
     if not hasattr(target, '_skip_ft_index'):
-        query = {'term': {'pg_id': target.id}}
-        Datastores.es.delete_by_query(target.partition_id, 'report', query)
+        query = {"query":{'term': {'pg_id': target.id}}}
+        Datastores.es.transport.perform_request("DELETE", '/{}/{}/_query'.format(target.partition_id, 'report'), body=query)
 
 
 sa.event.listen(Report, 'after_insert', after_insert)
diff --git a/backend/src/appenlight/models/report_group.py b/backend/src/appenlight/models/report_group.py
index d7a9293..5dd3a86 100644
--- a/backend/src/appenlight/models/report_group.py
+++ b/backend/src/appenlight/models/report_group.py
@@ -256,13 +256,11 @@ def after_update(mapper, connection, target):
 
 
 def after_delete(mapper, connection, target):
-    query = {'term': {'group_id': target.id}}
-    # TODO: routing seems unnecessary, need to test a bit more
-    # Datastores.es.delete_by_query(target.partition_id, 'report', query,
-    #                              query_params={'routing':str(target.id)})
-    Datastores.es.delete_by_query(target.partition_id, 'report', query)
-    query = {'term': {'pg_id': target.id}}
-    Datastores.es.delete_by_query(target.partition_id, 'report_group', query)
+    query = {"query": {'term': {'group_id': target.id}}}
+    # delete by query
+    Datastores.es.transport.perform_request("DELETE", '/{}/{}/_query'.format(target.partition_id, 'report'), body=query)
+    query = {"query": {'term': {'pg_id': target.id}}}
+    Datastores.es.transport.perform_request("DELETE", '/{}/{}/_query'.format(target.partition_id, 'report_group'), body=query)
 
 
 sa.event.listen(ReportGroup, 'after_insert', after_insert)
diff --git a/backend/src/appenlight/models/services/log.py b/backend/src/appenlight/models/services/log.py
index 4e89859..4e5979d 100644
--- a/backend/src/appenlight/models/services/log.py
+++ b/backend/src/appenlight/models/services/log.py
@@ -130,7 +130,7 @@ class LogService(BaseService):
                                             ixtypes=['logs'])
         if index_names:
             results = Datastores.es.search(
-                es_query, index=index_names, doc_type='log', size=0)
+                body=es_query, index=index_names, doc_type='log', size=0)
         else:
             results = []
         return results
@@ -156,9 +156,9 @@ class LogService(BaseService):
         if not index_names:
             return {}, 0
 
-        results = Datastores.es.search(es_query, index=index_names,
+        results = Datastores.es.search(body=es_query, index=index_names,
                                        doc_type='log', size=items_per_page,
-                                       es_from=es_from)
+                                       from_=es_from)
         if results['hits']['total'] > 5000:
             count = 5000
         else:
diff --git a/backend/src/appenlight/models/services/report_group.py b/backend/src/appenlight/models/services/report_group.py
index 15e4218..38c54e0 100644
--- a/backend/src/appenlight/models/services/report_group.py
+++ b/backend/src/appenlight/models/services/report_group.py
@@ -78,7 +78,7 @@ class ReportGroupService(BaseService):
             es_query['query']['filtered']['filter']['and'].extend(tags)
 
         result = Datastores.es.search(
-            es_query, index=index_names, doc_type='log', size=0)
+            body=es_query, index=index_names, doc_type='log', size=0)
         series = []
         for bucket in result['aggregations']['parent_agg']['buckets']:
             series.append({
@@ -249,7 +249,7 @@ class ReportGroupService(BaseService):
                                             ixtypes=['reports'])
         if index_names:
             results = Datastores.es.search(
-                query, index=index_names, doc_type=["report", "report_group"],
+                body=query, index=index_names, doc_type=["report", "report_group"],
                 size=0)
         else:
             return []
@@ -428,7 +428,7 @@ class ReportGroupService(BaseService):
         if not index_names:
             return []
 
-        result = Datastores.es.search(es_query,
+        result = Datastores.es.search(body=es_query,
                                       index=index_names,
                                       doc_type='log',
                                       size=0)
diff --git a/backend/src/appenlight/models/services/report_stat.py b/backend/src/appenlight/models/services/report_stat.py
index 274686b..35f2d13 100644
--- a/backend/src/appenlight/models/services/report_stat.py
+++ b/backend/src/appenlight/models/services/report_stat.py
@@ -41,7 +41,7 @@ class ReportStatService(BaseService):
                             'gte': since_when}}}]}}}}
 
         if index_names:
-            result = Datastores.es.search(es_query,
+            result = Datastores.es.search(body=es_query,
                                       index=index_names,
                                       doc_type='log',
                                       size=0)
diff --git a/backend/src/appenlight/models/services/request_metric.py b/backend/src/appenlight/models/services/request_metric.py
index d3c9d4d..9134331 100644
--- a/backend/src/appenlight/models/services/request_metric.py
+++ b/backend/src/appenlight/models/services/request_metric.py
@@ -113,7 +113,7 @@ class RequestMetricService(BaseService):
         if not index_names:
             return []
 
-        result = Datastores.es.search(es_query,
+        result = Datastores.es.search(body=es_query,
                                       index=index_names,
                                       doc_type='log',
                                       size=0)
@@ -156,7 +156,7 @@ class RequestMetricService(BaseService):
                             'lte': filter_settings['end_date']}}},
                         {'terms': {'namespace': [
                             'appenlight.request_metric']}}]}}}}
-            result = Datastores.es.search(es_query,
+            result = Datastores.es.search(body=es_query,
                                           index=index_names,
                                           doc_type='log',
                                           size=0)
@@ -205,7 +205,7 @@ class RequestMetricService(BaseService):
                 ]}
                 }}
             }
-            result = Datastores.es.search(es_query,
+            result = Datastores.es.search(body=es_query,
                                           index=index_names,
                                           doc_type='log',
                                           size=0)
@@ -249,7 +249,7 @@ class RequestMetricService(BaseService):
         index_names = es_index_name_limiter(ixtypes=['reports'])
         if index_names and series:
             result = Datastores.es.search(
-                query, doc_type='report', size=0, index=index_names)
+                body=query, doc_type='report', size=0, index=index_names)
             for bucket in result['aggregations']['top_reports']['buckets']:
                 details[bucket['key']] = []
 
@@ -340,7 +340,7 @@ class RequestMetricService(BaseService):
                             {'terms': {'namespace': [
                                 'appenlight.request_metric']}}]}}}}
 
-            result = Datastores.es.search(es_query,
+            result = Datastores.es.search(body=es_query,
                                           index=index_names,
                                           doc_type='log',
                                           size=0)
@@ -391,7 +391,7 @@ class RequestMetricService(BaseService):
                     }
                 }}
             }
-            result = Datastores.es.search(es_query,
+            result = Datastores.es.search(body=es_query,
                                           index=index_names,
                                           doc_type='log',
                                           size=0)
diff --git a/backend/src/appenlight/models/services/slow_call.py b/backend/src/appenlight/models/services/slow_call.py
index 9f2fe47..1207484 100644
--- a/backend/src/appenlight/models/services/slow_call.py
+++ b/backend/src/appenlight/models/services/slow_call.py
@@ -65,7 +65,7 @@ class SlowCallService(BaseService):
                 }
             }
             result = Datastores.es.search(
-                es_query, index=index_names, doc_type='log', size=0)
+                body=es_query, index=index_names, doc_type='log', size=0)
             results = result['aggregations']['parent_agg']['buckets']
         else:
             return []
@@ -118,7 +118,7 @@ class SlowCallService(BaseService):
                 }
             }
         }
-        calls = Datastores.es.search(calls_query,
+        calls = Datastores.es.search(body=calls_query,
                                      index=index_names,
                                      doc_type='log',
                                      size=0)
diff --git a/backend/src/appenlight/scripts/reindex_elasticsearch.py b/backend/src/appenlight/scripts/reindex_elasticsearch.py
index f999c2e..911c20e 100644
--- a/backend/src/appenlight/scripts/reindex_elasticsearch.py
+++ b/backend/src/appenlight/scripts/reindex_elasticsearch.py
@@ -19,6 +19,9 @@ import datetime
 import logging
 
 import sqlalchemy as sa
+import elasticsearch.exceptions
+import elasticsearch.helpers
+
 from collections import defaultdict
 from pyramid.paster import setup_logging
 from pyramid.paster import bootstrap
@@ -97,7 +100,7 @@ def main():
         if v.get('fulltext_indexer'):
             choices[k] = v['fulltext_indexer']
     parser.add_argument('-t', '--types', nargs='*',
-                        choices=['all'] + list(choices.keys()), default=['all'],
+                        choices=['all'] + list(choices.keys()), default=[],
                         help='Which parts of database should get reindexed')
     parser.add_argument('-c', '--config', required=True,
                         help='Configuration ini file of application')
@@ -107,6 +110,8 @@ def main():
     if 'all' in args.types:
         args.types = list(choices.keys())
 
+    print("Selected types to reindex: {}".format(args.types))
+
     log.info('settings {}'.format(args.types))
 
     if 'template' in args.types:
@@ -118,10 +123,9 @@ def main():
 
 def update_template():
     try:
-        Datastores.es.send_request("delete", ['_template', 'rcae'],
-                                   query_params={})
-    except Exception as e:
-        print(e)
+        Datastores.es.indices.delete_template('rcae')
+    except elasticsearch.exceptions.NotFoundError as e:
+        log.error(e)
     log.info('updating elasticsearch template')
     tag_templates = [
         {"values": {
@@ -230,15 +234,14 @@ def update_template():
         }
     }
 
-    Datastores.es.send_request('PUT', ['_template', 'rcae'],
-                               body=template_schema, query_params={})
+    Datastores.es.indices.put_template('rcae', body=template_schema)
 
 
 def reindex_reports():
     reports_groups_tables = detect_tables('reports_groups_p_')
     try:
-        Datastores.es.delete_index('rcae_r*')
-    except Exception as e:
+        Datastores.es.indices.delete('rcae_r*')
+    except elasticsearch.exceptions.NotFoundError as e:
         log.error(e)
 
     log.info('reindexing report groups')
@@ -261,8 +264,9 @@ def reindex_reports():
                 name = partition_table.name
                 log.info('round {}, {}'.format(i, name))
                 for k, v in es_docs.items():
-                    Datastores.es.bulk_index(k, 'report_group', v,
-                                             id_field="_id")
+                    to_update = {'_index': k, '_type': 'report_group'}
+                    [i.update(to_update) for i in v]
+                    elasticsearch.helpers.bulk(Datastores.es, v)
 
     log.info(
         'total docs {} {}'.format(i, datetime.datetime.now() - task_start))
@@ -288,8 +292,9 @@ def reindex_reports():
                 name = partition_table.name
                 log.info('round {}, {}'.format(i, name))
                 for k, v in es_docs.items():
-                    Datastores.es.bulk_index(k, 'report', v, id_field="_id",
-                                             parent_field='_parent')
+                    to_update = {'_index': k, '_type': 'report'}
+                    [i.update(to_update) for i in v]
+                    elasticsearch.helpers.bulk(Datastores.es, v)
 
     log.info(
         'total docs {} {}'.format(i, datetime.datetime.now() - task_start))
@@ -319,7 +324,9 @@ def reindex_reports():
                 name = partition_table.name
                 log.info('round  {}, {}'.format(i, name))
                 for k, v in es_docs.items():
-                    Datastores.es.bulk_index(k, 'log', v)
+                    to_update = {'_index': k, '_type': 'log'}
+                    [i.update(to_update) for i in v]
+                    elasticsearch.helpers.bulk(Datastores.es, v)
 
     log.info(
         'total docs {} {}'.format(i, datetime.datetime.now() - task_start))
@@ -327,8 +334,8 @@ def reindex_reports():
 
 def reindex_logs():
     try:
-        Datastores.es.delete_index('rcae_l*')
-    except Exception as e:
+        Datastores.es.indices.delete('rcae_l*')
+    except elasticsearch.exceptions.NotFoundError as e:
         log.error(e)
 
     # logs
@@ -354,7 +361,9 @@ def reindex_logs():
                 name = partition_table.name
                 log.info('round  {}, {}'.format(i, name))
                 for k, v in es_docs.items():
-                    Datastores.es.bulk_index(k, 'log', v)
+                    to_update = {'_index': k, '_type': 'log'}
+                    [i.update(to_update) for i in v]
+                    elasticsearch.helpers.bulk(Datastores.es, v)
 
     log.info(
         'total docs {} {}'.format(i, datetime.datetime.now() - task_start))
@@ -362,9 +371,9 @@ def reindex_logs():
 
 def reindex_metrics():
     try:
-        Datastores.es.delete_index('rcae_m*')
-    except Exception as e:
-        print(e)
+        Datastores.es.indices.delete('rcae_m*')
+    except elasticsearch.exceptions.NotFoundError as e:
+        log.error(e)
 
     log.info('reindexing applications metrics')
     i = 0
@@ -387,7 +396,9 @@ def reindex_metrics():
                 name = partition_table.name
                 log.info('round  {}, {}'.format(i, name))
                 for k, v in es_docs.items():
-                    Datastores.es.bulk_index(k, 'log', v)
+                    to_update = {'_index': k, '_type': 'log'}
+                    [i.update(to_update) for i in v]
+                    elasticsearch.helpers.bulk(Datastores.es, v)
 
     log.info(
         'total docs {} {}'.format(i, datetime.datetime.now() - task_start))
@@ -395,9 +406,9 @@ def reindex_metrics():
 
 def reindex_slow_calls():
     try:
-        Datastores.es.delete_index('rcae_sc*')
-    except Exception as e:
-        print(e)
+        Datastores.es.indices.delete('rcae_sc*')
+    except elasticsearch.exceptions.NotFoundError as e:
+        log.error(e)
 
     log.info('reindexing slow calls')
     i = 0
@@ -420,7 +431,9 @@ def reindex_slow_calls():
                 name = partition_table.name
                 log.info('round  {}, {}'.format(i, name))
                 for k, v in es_docs.items():
-                    Datastores.es.bulk_index(k, 'log', v)
+                    to_update = {'_index': k, '_type': 'log'}
+                    [i.update(to_update) for i in v]
+                    elasticsearch.helpers.bulk(Datastores.es, v)
 
     log.info(
         'total docs {} {}'.format(i, datetime.datetime.now() - task_start))
diff --git a/backend/src/appenlight/views/admin/admin.py b/backend/src/appenlight/views/admin/admin.py
index 57a639a..a7fb45c 100644
--- a/backend/src/appenlight/views/admin/admin.py
+++ b/backend/src/appenlight/views/admin/admin.py
@@ -159,8 +159,7 @@ def system(request):
 
     # es indices
     es_indices = []
-    result = Datastores.es.send_request(
-        'GET', ['_stats', 'store, docs'], query_params={})
+    result = Datastores.es.indices.stats(metric=['store, docs'])
     for ix, stats in result['indices'].items():
         size = stats['primaries']['store']['size_in_bytes']
         es_indices.append({'name': ix,
diff --git a/backend/src/appenlight/views/admin/partitions.py b/backend/src/appenlight/views/admin/partitions.py
index 16a6203..30fc7e7 100644
--- a/backend/src/appenlight/views/admin/partitions.py
+++ b/backend/src/appenlight/views/admin/partitions.py
@@ -50,7 +50,7 @@ def get_partition_stats():
         if not ix_time in holder:
             holder[ix_time] = {'pg': [], 'elasticsearch': []}
 
-    for partition in list(Datastores.es.aliases().keys()):
+    for partition in list(Datastores.es.indices.get_alias('rcae*')):
         if not partition.startswith('rcae'):
             continue
         split_data = partition.split('_')
@@ -128,7 +128,7 @@ def partitions_remove(request):
     if form.validate():
         for ix in form.data['es_index']:
             log.warning('deleting ES partition: {}'.format(ix))
-            Datastores.es.delete_index(ix)
+            Datastores.es.indices.delete(ix)
         for ix in form.data['pg_index']:
             log.warning('deleting PG partition: {}'.format(ix))
             stmt = sa.text('DROP TABLE %s CASCADE' % sa.text(ix))
diff --git a/backend/src/appenlight/views/logs.py b/backend/src/appenlight/views/logs.py
index 3ab7538..5e8e815 100644
--- a/backend/src/appenlight/views/logs.py
+++ b/backend/src/appenlight/views/logs.py
@@ -163,7 +163,7 @@ def common_tags(request):
     # tags
     index_names = es_index_name_limiter(
         ixtypes=[config.get('datasource', 'logs')])
-    result = Datastores.es.search(query, index=index_names, doc_type='log',
+    result = Datastores.es.search(body=query, index=index_names, doc_type='log',
                                   size=0)
     tag_buckets = result['aggregations']['sub_agg'].get('buckets', [])
     # namespaces
@@ -175,7 +175,7 @@ def common_tags(request):
             }
         }
     }
-    result = Datastores.es.search(query, index=index_names, doc_type='log',
+    result = Datastores.es.search(body=query, index=index_names, doc_type='log',
                                   size=0)
     namespaces_buckets = result['aggregations']['sub_agg'].get('buckets', [])
     return {
@@ -216,7 +216,7 @@ def common_values(request):
         }
     }
     index_names = es_index_name_limiter(ixtypes=[datasource])
-    result = Datastores.es.search(query, index=index_names, doc_type='log',
+    result = Datastores.es.search(body=query, index=index_names, doc_type='log',
                                   size=0)
     values_buckets = result['aggregations']['sub_agg'].get('buckets', [])
     return {