diff --git a/requirements.txt b/requirements.txt
index 5668c72..2bd0df4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,12 +7,12 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 alembic>=0.8.10 # MIT
 Babel!=2.4.0,>=2.3.4 # BSD
 castellan>=0.7.0 # Apache-2.0
-eventlet!=0.18.3,<0.21.0,>=0.18.2 # MIT
+eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
 Flask!=0.11,<1.0,>=0.10 # BSD
 iso8601>=0.1.11 # MIT
 Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
-keystoneauth1>=2.20.0 # Apache-2.0
+keystoneauth1>=2.21.0 # Apache-2.0
 keystonemiddleware>=4.12.0 # Apache-2.0
 oslo.config>=4.0.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
@@ -22,7 +22,7 @@ oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.log>=3.22.0 # Apache-2.0
 oslo.messaging!=5.25.0,>=5.24.2 # Apache-2.0
 oslo.middleware>=3.27.0 # Apache-2.0
-oslo.policy>=1.17.0 # Apache-2.0
+oslo.policy>=1.23.0 # Apache-2.0
 oslo.rootwrap>=5.0.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0