diff --git a/requirements.txt b/requirements.txt
index f43ce11..f364b92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ Jinja2==3.1.2
 lamson==1.3.4
 lockfile==0.12.2
 MarkupSafe==2.1.3
-mock==4.0.2
+mock==5.1.0
 nose==1.3.7
 pbr==5.5.1
 PyMySQL==1.0.2