diff --git a/requirements.txt b/requirements.txt
index dd95a580ab..9aaf2daa15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 alembic>=0.8.10 # MIT
 Babel!=2.4.0,>=2.3.4 # BSD
-castellan>=0.14.0 # Apache-2.0
+castellan>=0.16.0 # Apache-2.0
 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
@@ -26,7 +26,7 @@ oslo.policy>=1.30.0 # Apache-2.0
 oslo.rootwrap>=5.8.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.service!=1.28.1,>=1.24.0 # Apache-2.0
-oslo.utils>=3.31.0 # Apache-2.0
+oslo.utils>=3.33.0 # Apache-2.0
 paramiko>=2.0.0 # LGPLv2.1+
 requests>=2.14.2 # Apache-2.0
 python-cinderclient>=3.2.0 # Apache-2.0