diff --git a/chapter1/requirements.txt b/chapter1/requirements.txt
index 758bbda..8998979 100644
--- a/chapter1/requirements.txt
+++ b/chapter1/requirements.txt
@@ -116,7 +116,7 @@ pyzmq==16.0.2
 queuelib==1.4.2
 requests==2.13.0
 requirements-detector==0.3
-rsa==3.1.2
+rsa==4.7
 s3cmd==1.0.1
 s3transfer==0.1.10
 Scrapy==1.0.5