diff --git a/lower-constraints.txt b/lower-constraints.txt
index d64afb488f..27f2e10731 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -19,7 +19,7 @@ coverage==4.0
 cryptography==2.6.1
 cursive==0.2.1
 ddt==1.0.1
-debtcollector==1.2.0
+debtcollector==1.19.0
 decorator==4.3.0
 defusedxml==0.6.0
 dnspython==1.16.0
@@ -36,13 +36,13 @@ futurist==1.2.0
 glance-store==2.3.0
 greenlet==0.4.13
 httplib2==0.9.1
-idna==2.6
+idna==2.5
 importlib-metadata==1.1.3
 iso8601==0.1.11
 Jinja2==2.10
 jsonschema==3.2.0
 keystoneauth1==3.4.0
-keystonemiddleware==4.17.0
+keystonemiddleware==5.1.0
 kombu==4.3.0
 linecache2==1.0.0
 Mako==1.0.7
@@ -58,14 +58,14 @@ os-brick==3.1.0
 os-client-config==1.29.0
 os-win==4.0.1
 oslo.concurrency==3.26.0
-oslo.config==6.0.0
+oslo.config==8.1.0
 oslo.context==2.22.0
 oslo.db==5.0.0
-oslo.i18n==3.15.3
-oslo.log==3.36.0
+oslo.i18n==5.0.0
+oslo.log==4.3.0
 oslo.messaging==5.29.0
 oslo.middleware==3.31.0
-oslo.policy==3.6.0
+oslo.policy==3.6.2
 oslo.privsep==1.32.0
 oslo.reports==1.18.0
 oslo.serialization==2.25.0
@@ -76,7 +76,7 @@ oslotest==3.2.0
 osprofiler==1.4.0
 Paste==2.0.2
 PasteDeploy==1.5.0
-pbr==2.0.0
+pbr==3.1.1
 pika==0.10.0
 pika-pool==0.1.3
 positional==1.2.1
@@ -103,11 +103,11 @@ python-swiftclient==3.2.0
 pytz==2018.3
 PyYAML==5.1
 repoze.lru==0.7
-requests==2.14.2
+requests==2.18.0
 requestsexceptions==1.4.0
 restructuredtext-lint==1.1.3
 retrying==1.2.3
-rfc3986==1.1.0
+rfc3986==1.2.0
 Routes==2.3.1
 simplegeneric==0.8.1
 six==1.11.0
diff --git a/requirements.txt b/requirements.txt
index 94bdba6699..0e43a7fb44 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>=3.1.1 # Apache-2.0
 defusedxml>=0.6.0 # PSF
 
 # < 0.8.0/0.8 does not work, see https://bugs.launchpad.net/bugs/1153983
@@ -15,7 +15,7 @@ sqlalchemy-migrate>=0.11.0 # Apache-2.0
 sqlparse>=0.2.2 # BSD
 alembic>=0.9.6 # MIT
 httplib2>=0.9.1 # MIT
-oslo.config>=6.0.0 # Apache-2.0
+oslo.config>=8.1.0 # Apache-2.0
 oslo.concurrency>=3.26.0 # Apache-2.0
 oslo.context>=2.22.0 # Apache-2.0
 oslo.upgradecheck>=1.3.0 # Apache-2.0
@@ -24,7 +24,7 @@ stevedore!=3.0.0,>=1.20.0 # Apache-2.0
 futurist>=1.2.0 # Apache-2.0
 taskflow>=4.0.0 # Apache-2.0
 keystoneauth1>=3.4.0 # Apache-2.0
-keystonemiddleware>=4.17.0 # Apache-2.0
+keystonemiddleware>=5.1.0 # Apache-2.0
 WSME>=0.8.0 # MIT
 PrettyTable>=0.7.1 # BSD
 
@@ -37,12 +37,12 @@ pyOpenSSL>=17.1.0 # Apache-2.0
 six>=1.11.0 # MIT
 
 oslo.db>=5.0.0 # Apache-2.0
-oslo.i18n>=3.15.3 # Apache-2.0
-oslo.log>=3.36.0 # Apache-2.0
+oslo.i18n>=5.0.0 # Apache-2.0
+oslo.log>=4.3.0 # Apache-2.0
 oslo.messaging>=5.29.0,!=9.0.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
-oslo.policy>=3.6.0 # Apache-2.0
+oslo.policy>=3.6.2 # Apache-2.0
 
 retrying!=1.3.0,>=1.2.3 # Apache-2.0
 osprofiler>=1.4.0 # Apache-2.0
@@ -51,7 +51,7 @@ osprofiler>=1.4.0 # Apache-2.0
 glance-store>=2.3.0 # Apache-2.0
 
 
-debtcollector>=1.2.0 # Apache-2.0
+debtcollector>=1.19.0 # Apache-2.0
 cryptography>=2.6.1 # BSD/Apache-2.0
 cursive>=0.2.1 # Apache-2.0
 
diff --git a/test-requirements.txt b/test-requirements.txt
index 948ae17ff8..f47cd69602 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -12,7 +12,7 @@ Babel!=2.4.0,>=2.3.4 # BSD
 coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
-requests>=2.14.2 # Apache-2.0
+requests>=2.18.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testresources>=2.0.0 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD