diff --git a/lower-constraints.txt b/lower-constraints.txt
index a5ff1ca..9422676 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -8,7 +8,7 @@
 chardet==3.0.4
 cliff==2.11.0
 cmd2==0.8.1
-coverage==4.5.1
+coverage==4.0
 cryptography==2.1.4
 debtcollector==1.19.0
 docutils==0.14
@@ -35,20 +35,20 @@
 netaddr==0.7.19
 netifaces==0.10.6
 nose==1.3.7
-nosexcover==1.0.11
+nosexcover==1.0.10
 openstackdocstheme==1.20.0
 os-client-config==1.29.0
 oslo.concurrency==3.26.0
 oslo.config==5.2.0
 oslo.context==2.20.0
 oslo.i18n==3.20.0
-oslo.log==3.37.0
-oslo.policy==1.34.0
+oslo.log==3.36.0
+oslo.policy==1.30.0
 oslo.serialization==2.25.0
 oslo.utils==3.36.0
-oslotest==3.3.0
+oslotest==3.2.0
 paramiko==2.4.1
-pbr==3.1.1
+pbr==2.0.0
 pep8==1.5.7
 prettytable==0.7.2
 pyasn1==0.4.2
@@ -73,8 +73,8 @@
 Sphinx==1.6.5
 sphinxcontrib-websupport==1.0.1
 stestr==2.0.0
-stevedore==1.28.0
-tempest==18.0.0
+stevedore==1.20.0
+tempest==17.1.0
 testrepository==0.0.20
 testtools==2.3.0
 traceback2==1.4.0