diff --git a/requirements.txt b/requirements.txt
index 6bebed6..026a2d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -161,7 +161,7 @@ requests==2.18.4
 requests-oauthlib==0.8.0
 requests-toolbelt==0.9.1
 resampy==0.2.0
-rsa==3.4.2
+rsa==4.1
 ruamel-yaml==0.11.14
 s3transfer==0.1.13
 scikit-image==0.14.2