diff --git a/lower-constraints.txt b/lower-constraints.txt
index 0e98199d7..6d5412eb9 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -29,7 +29,7 @@ dogpile.cache==0.6.5
 dulwich==0.19.0
 edgegrid-python==1.1.1
 enum-compat==0.0.2
-eventlet==0.18.2
+eventlet==0.25.1
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
@@ -60,8 +60,8 @@ logutils==0.3.5
 Mako==1.0.7
 MarkupSafe==1.0
 mccabe==0.2.1
-mock==2.0.0
-monasca-statsd==1.1.0
+mock==3.0.0
+monasca-statsd==1.4.0
 monotonic==1.4
 mox3==0.25.0
 msgpack==0.5.6
@@ -83,7 +83,7 @@ oslo.context==2.19.2
 oslo.db==4.27.0
 oslo.i18n==3.15.3
 oslo.log==3.36.0
-oslo.messaging==5.29.0
+oslo.messaging==9.5.0
 oslo.middleware==3.31.0
 oslo.policy==1.30.0
 oslo.reports==1.18.0
diff --git a/requirements.txt b/requirements.txt
index bc0e2f0da..a05d76055 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 Babel!=2.4.0,>=2.3.4 # BSD
-eventlet!=0.18.3,!=0.20.1,!=0.21.0,!=0.23.0,!=0.25.0,>=0.18.2 # MIT
+eventlet>=0.25.1 # MIT
 Flask!=0.11,>=0.10 # BSD
 greenlet>=0.4.10 # MIT
 Jinja2>=2.10 # BSD License (3 clause)
@@ -13,7 +13,7 @@ keystonemiddleware>=4.17.0 # Apache-2.0
 netaddr>=0.7.18 # BSD
 oslo.config>=5.2.0 # Apache-2.0
 oslo.concurrency>=3.26.0 # Apache-2.0
-oslo.messaging>=5.29.0 # Apache-2.0
+oslo.messaging>=9.5.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
@@ -47,6 +47,6 @@ python-memcached>=1.56 # PSF
 tooz>=1.58.0 # Apache-2.0
 debtcollector>=1.2.0 # Apache-2.0
 os-win>=3.0.0 # Apache-2.0
-monasca-statsd>=1.1.0 # Apache-2.0
+monasca-statsd>=1.4.0 # Apache-2.0
 futurist>=1.2.0 # Apache-2.0
 edgegrid-python>=1.1.1 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 9d969c828..ace55097a 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,7 +6,7 @@
 hacking>=3.0,<3.1.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
-mock>=2.0.0 # BSD
+mock>=3.0.0 # BSD
 stestr>=2.0.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 requests-mock>=1.2.0 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index aaa385e24..98275654f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,7 @@
 [tox]
-minversion = 2.3.2
+minversion = 3.1.0
 envlist = py37,flake8
+ignore_basepython_conflict = True
 skipsdist = True
 
 [testenv]
@@ -29,6 +30,7 @@ install_command =
 commands =
   find . -type f -name "*.py[c|o]" -delete
   rm -f .testrepository/times.dbm
+  stestr run {posargs}
 deps =
   -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt?h=master}
   -r{toxinidir}/requirements.txt
@@ -38,18 +40,6 @@ whitelist_externals =
   find
   rm
 
-[testenv:py36]
-basepython = python3.6
-commands =
-  {[testenv]commands}
-  stestr run {posargs}
-
-[testenv:py37]
-basepython = python3.7
-commands =
-  {[testenv]commands}
-  stestr run '{posargs}'
-
 [testenv:docs]
 deps =
   -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}