diff --git a/morphology-similarity/requirements.txt b/morphology-similarity/requirements.txt
index 83509ea..18913ac 100644
--- a/morphology-similarity/requirements.txt
+++ b/morphology-similarity/requirements.txt
@@ -110,7 +110,7 @@ qtconsole==4.6.0
 requests==2.22.0
 requests-oauthlib==1.3.0
 retrying==1.3.3
-rsa==3.4.2
+rsa==4.7
 s3transfer==0.3.0
 scikit-image==0.16.2
 scikit-learn==0.22.2