diff --git a/requirements.txt b/requirements.txt
index 9079a8d..c0874a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@
 netaddr!=0.7.16,>=0.7.13 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 oslo.concurrency>=3.8.0 # Apache-2.0
-oslo.config>=3.14.0 # Apache-2.0
+oslo.config!=3.18.0,>=3.14.0 # Apache-2.0
 oslo.log>=3.11.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.utils>=3.17.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 53efa46..9e3165c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@
 # needed for doc build
 sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
-reno>=1.8.0 # Apache2
+reno>=1.8.0 # Apache-2.0
 mock>=2.0 # BSD
-coverage>=3.6 # Apache-2.0
+coverage>=4.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0