Updated from global requirements

Change-Id: I25361c0acee423c4c8d23c00716384e0deed1a32
diff --git a/requirements.txt b/requirements.txt
index 415eaa5..f00de0d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@
 oslo.concurrency>=2.3.0 # Apache-2.0
 oslo.config>=1.11.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
-oslo.log>=1.6.0 # Apache-2.0
+oslo.log>=1.8.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
 oslo.utils>=1.9.0 # Apache-2.0
 six>=1.9.0