diff --git a/requirements.txt b/requirements.txt
index db6f33c7..c3001943 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ pbr>=1.8 # Apache-2.0
 Babel>=2.3.4 # BSD
 
 os-brick>=1.8.0 # Apache-2.0
-os-win>=1.3.0 # Apache-2.0
+os-win>=1.4.0 # Apache-2.0
 oslo.config!=3.18.0,>=3.14.0 # Apache-2.0
 oslo.log>=3.11.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0