diff --git a/lower-constraints.txt b/lower-constraints.txt
index 2bd57f8a01f9..b1d7d73b2d0e 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -49,7 +49,7 @@ Mako==1.0.7
 MarkupSafe==1.1.1
 microversion-parse==0.2.1
 mock==3.0.0
-msgpack==0.5.6
+msgpack==0.6.0
 msgpack-python==0.5.6
 munch==2.2.0
 mypy==0.761
@@ -58,30 +58,30 @@ netifaces==0.10.4
 networkx==2.1.0
 numpy==1.19.0
 openstacksdk==0.35.0
-os-brick==3.1.0
+os-brick==4.2.0
 os-client-config==1.29.0
 os-resource-classes==0.4.0
 os-service-types==1.7.0
 os-traits==2.5.0
 os-vif==1.14.0
-os-win==4.2.0
+os-win==5.1.0
 os-xenapi==0.3.4
 osc-lib==1.10.0
 oslo.cache==1.26.0
-oslo.concurrency==3.29.0
+oslo.concurrency==4.3.0
 oslo.config==6.8.0
-oslo.context==2.22.0
+oslo.context==3.1.1
 oslo.db==4.44.0
-oslo.i18n==3.15.3
-oslo.log==3.36.0
+oslo.i18n==5.0.1
+oslo.log==4.4.0
 oslo.messaging==10.3.0
 oslo.middleware==3.31.0
 oslo.policy==3.6.0
-oslo.privsep==1.33.2
+oslo.privsep==2.4.0
 oslo.reports==1.18.0
 oslo.rootwrap==5.8.0
-oslo.serialization==2.21.1
-oslo.service==1.40.1
+oslo.serialization==4.0.1
+oslo.service==2.4.0
 oslo.upgradecheck==1.3.0
 oslo.utils==4.7.0
 oslo.versionedobjects==1.35.0
@@ -94,7 +94,7 @@ packaging==20.4
 paramiko==2.7.1
 Paste==2.0.2
 PasteDeploy==1.5.0
-pbr==2.0.0
+pbr==5.5.0
 pluggy==0.6.0
 ply==3.11
 prettytable==0.7.1
@@ -116,7 +116,7 @@ pypowervm==1.1.15
 pytest==3.4.2
 python-barbicanclient==4.5.2
 python-cinderclient==3.3.0
-python-dateutil==2.5.3
+python-dateutil==2.7.0
 python-editor==1.0.3
 python-glanceclient==2.8.0
 python-ironicclient==3.0.0
@@ -134,7 +134,7 @@ retrying==1.3.3
 rfc3986==1.2.0
 Routes==2.3.1
 simplejson==3.13.2
-six==1.11.0
+six==1.15.0
 smmap2==2.0.3
 sortedcontainers==2.1.0
 SQLAlchemy==1.2.19
@@ -146,7 +146,7 @@ stevedore==1.20.0
 suds-jurko==0.6
 taskflow==3.8.0
 Tempita==0.5.2
-tenacity==6.0.0
+tenacity==6.2.0
 testrepository==0.0.20
 testresources==2.0.0
 testscenarios==0.4
diff --git a/requirements.txt b/requirements.txt
index 1b9db60e7aa2..655075042c6e 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!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=5.5.0 # Apache-2.0
 SQLAlchemy>=1.2.19 # MIT
 decorator>=4.1.0 # BSD
 eventlet>=0.26.1 # MIT
@@ -32,30 +32,30 @@ requests>=2.23.0 # Apache-2.0
 stevedore>=1.20.0 # Apache-2.0
 websockify>=0.9.0 # LGPLv3
 oslo.cache>=1.26.0 # Apache-2.0
-oslo.concurrency>=3.29.0 # Apache-2.0
+oslo.concurrency>=4.3.0 # Apache-2.0
 oslo.config>=6.8.0 # Apache-2.0
-oslo.context>=2.22.0 # Apache-2.0
-oslo.log>=3.36.0 # Apache-2.0
+oslo.context>=3.1.1 # Apache-2.0
+oslo.log>=4.4.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
-oslo.serialization!=2.19.1,>=2.21.1 # Apache-2.0
+oslo.serialization>=4.0.1 # Apache-2.0
 oslo.upgradecheck>=1.3.0
 oslo.utils>=4.7.0 # Apache-2.0
 oslo.db>=4.44.0 # Apache-2.0
 oslo.rootwrap>=5.8.0 # Apache-2.0
 oslo.messaging>=10.3.0 # Apache-2.0
 oslo.policy>=3.6.0 # Apache-2.0
-oslo.privsep>=1.33.2 # Apache-2.0
-oslo.i18n>=3.15.3 # Apache-2.0
-oslo.service>=1.40.1 # Apache-2.0
+oslo.privsep>=2.4.0 # Apache-2.0
+oslo.i18n>=5.0.1 # Apache-2.0
+oslo.service>=2.4.0 # Apache-2.0
 rfc3986>=1.2.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
 psutil>=3.2.2 # BSD
 oslo.versionedobjects>=1.35.0 # Apache-2.0
-os-brick>=3.1.0 # Apache-2.0
+os-brick>=4.2.0 # Apache-2.0
 os-resource-classes>=0.4.0 # Apache-2.0
 os-traits>=2.5.0 # Apache-2.0
 os-vif>=1.14.0 # Apache-2.0
-os-win>=4.2.0 # Apache-2.0
+os-win>=5.1.0 # Apache-2.0
 castellan>=0.16.0 # Apache-2.0
 microversion-parse>=0.2.1 # Apache-2.0
 os-xenapi>=0.3.4 # Apache-2.0
@@ -65,7 +65,7 @@ pypowervm>=1.1.15 # Apache-2.0
 retrying>=1.3.3,!=1.3.0 # Apache-2.0
 os-service-types>=1.7.0 # Apache-2.0
 taskflow>=3.8.0 # Apache-2.0
-python-dateutil>=2.5.3 # BSD
+python-dateutil>=2.7.0 # BSD
 zVMCloudConnector>=1.3.0;sys_platform!='win32'  # Apache 2.0 License
 futurist>=1.8.0 # Apache-2.0
 openstacksdk>=0.35.0 # Apache-2.0