diff --git a/requirements.txt b/requirements.txt
index 3946258c0..b172f53a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ oslo.service>=1.10.0 # Apache-2.0
 oslo.versionedobjects>=1.17.0 # Apache-2.0
 oslo.context>=2.12.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
-oslo.db>=4.19.0 # Apache-2.0
+oslo.db>=4.21.1 # Apache-2.0
 os-vif>=1.4.0 # Apache-2.0
 six>=1.9.0 # MIT
 WSME>=0.8 # MIT
diff --git a/setup.py b/setup.py
index 137011c0e..566d84432 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ import setuptools
 
 # In python < 2.7.4, a lazy loading of package `pbr` will break
 # setuptools if some other modules registered functions in `atexit`.
-# solution from: https://bugs.python.org/issue15881#msg170215
+# solution from: http://bugs.python.org/issue15881#msg170215
 try:
     import multiprocessing  # noqa
 except ImportError: