diff --git a/README.md b/README.md
index 80d5fb6..fdc29f5 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@
 ### Previous releases
 
 Releases 2015-2018 during incubation at Apache Software Foundation
-are available from the ASF Download Archive <http://archive.apache.org/dist/incubator/taverna/>
+are available from the ASF Download Archive <https://archive.apache.org/dist/incubator/taverna/>
 
 Releases 2014 from the University of Manchester are on BitBucket <https://bitbucket.org/taverna/>