diff --git a/docs/samples/custom/kfserving-custom-model/model-server/requirements.txt b/docs/samples/custom/kfserving-custom-model/model-server/requirements.txt
index 2bd6b74..d4af69c 100644
--- a/docs/samples/custom/kfserving-custom-model/model-server/requirements.txt
+++ b/docs/samples/custom/kfserving-custom-model/model-server/requirements.txt
@@ -31,7 +31,7 @@ pytz==2019.3
 PyYAML==5.3
 requests==2.22.0
 requests-oauthlib==1.3.0
-rsa==4.0
+rsa==4.7
 six==1.14.0
 table-logger==0.3.6
 torch==1.4.0
diff --git a/docs/samples/custom/kfserving-custom-model/requirements.txt b/docs/samples/custom/kfserving-custom-model/requirements.txt
index 33e0252..3f1a636 100644
--- a/docs/samples/custom/kfserving-custom-model/requirements.txt
+++ b/docs/samples/custom/kfserving-custom-model/requirements.txt
@@ -64,7 +64,7 @@ PyYAML==5.3
 pyzmq==19.0.0
 requests==2.23.0
 requests-oauthlib==1.3.0
-rsa==4.0
+rsa==4.7
 Send2Trash==1.5.0
 six==1.14.0
 table-logger==0.3.6