diff --git a/test-requirements.txt b/test-requirements.txt
index 67ffe2966c..580ea861a1 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,7 +13,7 @@ freezegun # Apache-2.0
 oslo.db[fixtures,mysql,postgresql]!=4.13.1,!=4.13.2,>=4.10.0 # Apache-2.0
 
 # computes code coverage percentages
-coverage>=3.6 # Apache-2.0
+coverage>=4.0 # Apache-2.0
 # fixture stubbing
 fixtures>=3.0.0 # Apache-2.0/BSD
 # xml parsing