diff --git a/requirements.txt b/requirements.txt
index f5fea544..7d66eae9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,7 @@
 pbr>=1.6 # Apache-2.0
 alembic>=0.8.4 # MIT
 Babel!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3,>=1.3 # BSD
+debtcollector>=1.2.0  # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.config>=3.9.0 # Apache-2.0
 oslo.context>=2.2.0 # Apache-2.0