diff --git a/requirements.txt b/requirements.txt
index 522f2c9f..ef161512 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,19 +8,17 @@ oslo.config>=1.11.0
 oslo.context>=0.2.0
 oslo.utils>=1.4.0
 pecan>=0.4.5
-oslo.db>=1.8.0,<4.8.0
+oslo.db>=4.27.0  # Apache-2.0
 oslo.log>=1.0.0
 pika>=0.9.14
 python-openid
 PyYAML>=3.1.0
 requests>=1.1
 six>=1.7.0
-SQLAlchemy>=0.9.7,<=0.9.99
+SQLAlchemy
 webob==1.7.4
 WSME>=0.6,<0.8
-sqlalchemy-migrate>=0.9.1,!=0.9.2
 SQLAlchemy-FullText-Search>=0.2.3
-eventlet>=0.13.0
 stevedore>=1.3.0
 tzlocal>=1.1.2
 email>=4.0.2;python_version<'3.0'