diff --git a/requirements.txt b/requirements.txt
index b796fa9..294f0d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 
 dogpile.cache>=0.6.2 # BSD
 six>=1.9.0 # MIT
-oslo.config>=4.0.0 # Apache-2.0
+oslo.config!=4.3.0,!=4.4.0,>=4.0.0 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.log>=3.22.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 477cfd1..40a7a14 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,5 +6,5 @@ mock>=2.0 # BSD
 oslotest>=1.10.0 # Apache-2.0
 oslosphinx>=4.7.0 # Apache-2.0
 pifpaf>=0.10.0 # Apache-2.0
-sphinx!=1.6.1,>=1.5.1 # BSD
+sphinx>=1.6.2 # BSD
 reno!=2.3.1,>=1.8.0 # Apache-2.0