diff --git a/requirements.txt b/requirements.txt
index 49e4e35b3..361f82eba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.log>=3.11.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0
-oslo.utils>=3.18.0 # Apache-2.0
+oslo.utils>=3.20.0 # Apache-2.0
 pecan!=1.0.2,!=1.0.3,!=1.0.4,!=1.2,>=1.0.0 # BSD
 Pint>=0.5 # BSD
 psutil>=3.2.2 # BSD