diff --git a/requirements.txt b/requirements.txt
index 9aa6a39c..dfb0bec5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,5 @@ requests==2.6.2
 pytest==3.0.6
 pip==9.0.1
 phply==1.0.0
-Werkzeug==0.11.9
\ No newline at end of file
+Werkzeug==0.11.9
+ConcurrentLogHandler==0.9.1