diff --git a/doc/requirements.txt b/doc/requirements.txt
index 400e1d9..5fbf340 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,8 +1,4 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
-# this is required for the docs build jobs
-sphinx>=2.0.0,!=2.1.0 # BSD
+sphinx>=2.0.0 # BSD
 openstackdocstheme>=2.2.0 # Apache-2.0
 reno>=3.1.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
diff --git a/requirements.txt b/requirements.txt
index 9738a15..a4c892a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=2.0.0 # Apache-2.0
 oslo.config>=5.2.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.utils>=3.33.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 3aa5639..240590e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,5 +1,5 @@
 oslotest>=3.2.0 # Apache-2.0
-coverage!=4.4,>=4.0 # Apache-2.0
+coverage>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 stestr>=2.0.0 # Apache-2.0
 eventlet>=0.19.0 # MIT