diff --git a/requirements.txt b/requirements.txt
index 7fe8858..cb0031d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,17 +4,17 @@
 pbr>=0.11,<2.0
 anyjson>=0.3.3
 httplib2>=0.7.5
-jsonschema>=2.0.0,<3.0.0
+jsonschema>=2.0.0,<3.0.0,!=2.5.0
 testtools>=0.9.36,!=1.2.0
 boto>=2.32.1
 paramiko>=1.13.0
 netaddr>=0.7.12
 testrepository>=0.0.18
 pyOpenSSL>=0.11
-oslo.concurrency>=1.8.0         # Apache-2.0
+oslo.concurrency>=2.0.0         # Apache-2.0
 oslo.config>=1.11.0  # Apache-2.0
 oslo.i18n>=1.5.0  # Apache-2.0
-oslo.log>=1.0.0  # Apache-2.0
+oslo.log>=1.2.0  # Apache-2.0
 oslo.serialization>=1.4.0               # Apache-2.0
 oslo.utils>=1.4.0                       # Apache-2.0
 six>=1.9.0