diff --git a/pip_requirements.txt b/pip_requirements.txt
index 43e625b..6a26d82 100644
--- a/pip_requirements.txt
+++ b/pip_requirements.txt
@@ -1 +1,2 @@
-Flask==0.12.2
\ No newline at end of file
+Flask==0.12.2
+coverage==4.4.1
\ No newline at end of file