diff --git a/doc/requirements.txt b/doc/requirements.txt
index 5c5dc86..319b950 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,5 +1,5 @@
 # For generating sphinx documentation
 doc8>=0.6.0 # Apache-2.0
-sphinx>=2.0.0,!=2.1.0 # BSD
+sphinx>=2.0.0 # BSD
 openstackdocstheme>=2.2.1 # Apache-2.0
 reno>=3.1.0 # Apache-2.0
diff --git a/requirements.txt b/requirements.txt
index 33772ab..b66a256 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # See: https://bugs.launchpad.net/pbr/+bug/1384919 for why this is here...
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=2.0.0 # Apache-2.0
 
 # For pretty formatting machines/state tables...
 PrettyTable>=0.7.2 # BSD
diff --git a/test-requirements.txt b/test-requirements.txt
index f9d947f..c4b35e6 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
-coverage!=4.4,>=4.0 # Apache-2.0
+coverage>=4.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 stestr>=2.0.0 # Apache-2.0
 testtools>=2.2.0 # MIT