diff --git a/requirements.txt b/requirements.txt
index 0c0f03252..b07f465e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@ pygments-csv-lexer~=0.1
 pysass~=0.1.0
 sphinx~=3.0
 werkzeug==0.14.1
+