diff --git a/README.md b/README.md
index 5c3ae3f..5ad9830 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 [![License (3-Clause BSD)](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](https://opensource.org/licenses/BSD-3-Clause)
 [![Kotlin](https://img.shields.io/badge/kotlin-1.9.21-7f52ff)](https://kotlinlang.org/)
+[![bld](https://img.shields.io/badge/1.8.0-FA9052?label=bld&labelColor=2392FF)](https://rife2.com/bld)
 [![Release](https://img.shields.io/github/release/ethauvin/readingtime.svg)](https://github.com/ethauvin/readingtime/releases/latest)
 [![Maven Central](https://img.shields.io/maven-central/v/net.thauvin.erik/readingtime.svg?color=blue)](https://search.maven.org/search?q=g:%22net.thauvin.erik%22%20AND%20a:%22readingtime%22)
 [![Nexus Snapshot](https://img.shields.io/nexus/s/net.thauvin.erik/readingtime?label=snapshot&server=https%3A%2F%2Foss.sonatype.org%2F)](https://oss.sonatype.org/content/repositories/snapshots/net/thauvin/erik/readingtime/)
@@ -106,3 +107,22 @@ A JSP tag is also available for easy incorporation into web applications:
 ```
 
 None of the attributes are required.
+
+## Contributing
+
+If you want to contribute to this project, all you have to do is clone the GitHub
+repository:
+
+```console
+git clone git@github.com:ethauvin/readingtime.git
+```
+
+Then use [bld](https://rife2.com/bld) to build:
+
+```console
+cd readingtime
+./bld compile
+```
+
+The project has an [IntelliJ IDEA](https://www.jetbrains.com/idea/) project structure. You can just open it after all
+the dependencies were downloaded and peruse the code.