diff --git a/README.md b/README.md
index bd54b0c..d94bfd1 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ SPDX-License-Identifier: Apache-2.0
 
 [![Travis (.com)](https://travis-ci.com/pgpainless/sop-java.svg?branch=master)](https://travis-ci.com/pgpainless/sop-java)
 [![Maven Central](https://badgen.net/maven/v/maven-central/org.pgpainless/sop-java)](https://search.maven.org/artifact/org.pgpainless/sop-java)
-[![Spec Revision: 3](https://img.shields.io/badge/Spec%20Revision-3-blue)](https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/)
+[![Spec Revision: 4](https://img.shields.io/badge/Spec%20Revision-4-blue)](https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/04/)
 [![Coverage Status](https://coveralls.io/repos/github/pgpainless/sop-java/badge.svg?branch=master)](https://coveralls.io/github/pgpainless/sop-java?branch=master)
 [![REUSE status](https://api.reuse.software/badge/github.com/pgpainless/sop-java)](https://api.reuse.software/info/github.com/pgpainless/sop-java)