diff --git a/requirements.txt b/requirements.txt
index 43a698ac..e9b400e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,8 @@ blinker==1.4
 bleach==1.4.3
 celery[redis]==4.0.2
 CommonMark==0.7.2
+elasticsearch==6.0.0
+elasticsearch-dsl==5.4.0
 Eve==0.7.3
 Flask==0.12
 Flask-Babel==0.11.2
@@ -53,6 +55,7 @@ requests-oauthlib==0.7.0
 rsa==3.4.2
 simplejson==3.10.0
 six==1.10.0
+urllib3==1.22
 vine==1.1.3
 WTForms==2.1
 Werkzeug==0.11.15