diff --git a/vncsdk-1.7.0/tools/vnccloudaddresstool/requirements.txt b/vncsdk-1.7.0/tools/vnccloudaddresstool/requirements.txt
index cf06ad4..272ff28 100644
--- a/vncsdk-1.7.0/tools/vnccloudaddresstool/requirements.txt
+++ b/vncsdk-1.7.0/tools/vnccloudaddresstool/requirements.txt
@@ -5,7 +5,7 @@ click==6.7
 Flask==0.12.2
 idna==2.6
 itsdangerous==0.24
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.0
 requests==2.18.4
 urllib3==1.22