diff --git a/README.md b/README.md
index 05391f1..6de821e 100644
--- a/README.md
+++ b/README.md
@@ -544,6 +544,7 @@ A curated list of awesome Java frameworks, libraries and software.
 * [CQEngine](https://github.com/npgall/cqengine) - Ultra-fast, SQL-like queries on Java collections.
 * [Design Patterns](https://github.com/iluwatar/java-design-patterns) - Implementation and explanation of the most common design patterns.
 * [Failsafe](https://github.com/jhalterman/failsafe) - Simple failure handling with retries and circuit breakers.
+* [FF4J](http://www.ff4j.org/) - Feature Flags for Java.
 * [J2ObjC](https://github.com/google/j2objc) - Java-to-Objective-C translator for porting Android libraries to iOS.
 * [javaslang-circuitbreaker](https://github.com/javaslang/javaslang-circuitbreaker) - Functional fault tolerance library.
 * [JavaX](http://javax.ai1.lol/) - Reinventing and extending Java with a focus on simplicity.