diff --git a/requirements.txt b/requirements.txt
index c838c5d..540347d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ pytest==5.3.5
 PyYAML==5.3
 requests==2.22.0
 requests-oauthlib==1.3.0
-rsa==4.0
+rsa==4.7
 scipy==1.4.1
 sentencepiece==0.1.85
 six==1.14.0