diff --git a/requirements.txt b/requirements.txt
index f2211dfb..55867772 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,14 +3,14 @@
 # process, which may cause wedges in the gate later.
 
 pbr>=1.6 # Apache-2.0
-Babel>=1.3 # BSD
+Babel!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3,>=1.3 # BSD
 
-os-win>=0.0.6 # Apache-2.0
-oslo.config>=3.4.0 # Apache-2.0
+os-win>=0.4.1 # Apache-2.0
+oslo.config>=3.9.0 # Apache-2.0
 oslo.log>=1.14.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.service>=1.0.0 # Apache-2.0
-oslo.utils>=3.4.0 # Apache-2.0
+oslo.utils>=3.5.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 
-eventlet>=0.18.2 # MIT
+eventlet!=0.18.3,>=0.18.2 # MIT