diff --git a/lower-constraints.txt b/lower-constraints.txt
index 29f1b4a..93e7579 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -58,32 +58,32 @@ netifaces==0.10.4
 networkx==2.1.0
 numpy==1.19.0
 openstacksdk==0.35.0
-os-brick==4.3.1
+os-brick==5.2
 os-client-config==1.29.0
 os-resource-classes==1.1.0
 os-service-types==1.7.0
-os-traits==2.5.0
+os-traits==2.7.0
 os-vif==1.15.2
-os-win==5.4.0
-os-xenapi==0.3.4
+os-win==5.5.0
 osc-lib==1.10.0
 oslo.cache==1.26.0
-oslo.concurrency==4.4.0
+oslo.concurrency==4.5.0
 oslo.config==8.6.0
-oslo.context==3.1.1
+oslo.context==3.4.0
 oslo.db==10.0.0
-oslo.i18n==5.0.1
-oslo.log==4.4.0
+oslo.i18n==5.1.0
+oslo.log==4.6.1
+oslo.limit==1.5.0
 oslo.messaging==10.3.0
 oslo.middleware==3.31.0
 oslo.policy==3.7.0
-oslo.privsep==2.4.0
+oslo.privsep==2.6.2
 oslo.reports==1.18.0
 oslo.rootwrap==5.8.0
-oslo.serialization==4.1.0
-oslo.service==2.5.0
+oslo.serialization==4.2.0
+oslo.service==2.8.0
 oslo.upgradecheck==1.3.0
-oslo.utils==4.8.0
+oslo.utils==4.12.1
 oslo.versionedobjects==1.35.0
 oslo.vmware==3.6.0
 oslotest==3.8.0
@@ -94,7 +94,7 @@ packaging==20.4
 paramiko==2.7.1
 Paste==2.0.2
 PasteDeploy==1.5.0
-pbr==5.5.1
+pbr==5.8.0
 pluggy==0.6.0
 ply==3.11
 prettytable==0.7.1
@@ -134,6 +134,7 @@ retrying==1.3.3
 rfc3986==1.2.0
 Routes==2.3.1
 simplejson==3.13.2
+six==1.15.0
 smmap2==2.0.3
 sortedcontainers==2.1.0
 SQLAlchemy==1.4.13
@@ -149,7 +150,7 @@ tenacity==6.3.1
 testrepository==0.0.20
 testresources==2.0.0
 testscenarios==0.4
-testtools==2.2.0
+testtools==2.5.0
 tooz==1.58.0
 traceback2==1.4.0
 types-paramiko==0.1.3
diff --git a/requirements.txt b/requirements.txt
index 655ee88..b339793 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-pbr>=5.5.1 # Apache-2.0
+pbr>=5.8.0 # Apache-2.0
 oslo.config>=8.6.0 # Apache-2.0
-oslo.i18n>=5.0.1 # Apache-2.0
-oslo.log>=4.4.0 # Apache-2.0
+oslo.i18n>=5.1.0 # Apache-2.0
+oslo.log>=4.6.1 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index fe3e83c..81b0929 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,7 +8,7 @@ mock>=3.0.0 # BSD
 
 fixtures>=3.0.0 # Apache-2.0/BSD
 stestr>=2.0.0 # Apache-2.0
-testtools>=2.2.0 # MIT
+testtools>=2.5.0 # MIT
 coverage!=4.4,>=4.0 # Apache-2.0
 wsgi-intercept>=1.7.0 # MIT License