diff --git a/requirements.txt b/requirements.txt
index 37d1827..a5b03b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,15 +1,15 @@
 # Add here external Python modules dependencies, one per line. Module names
 # should match https://pypi.python.org/pypi names. For the full spec or
 # dependency lines, see https://pip.readthedocs.org/en/1.1/requirements.html
 
 arrow
 celery
 Click
-elasticsearch>5.4
+elasticsearch > 5.4
 flask
 kombu
 psycopg2
 vcversioner
 
 # test dependencies
 # hypothesis