diff --git a/README.md b/README.md
index 64883dc94..567d6d1de 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 ![curl logo](https://cdn.rawgit.com/curl/curl-www/master/logo/curl-logo.svg)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/63/badge)](https://bestpractices.coreinfrastructure.org/projects/63)
 
 Curl is a command-line tool for transferring data specified with URL
 syntax. Find out how to use curl by reading [the curl.1 man