diff --git a/README.md b/README.md
index 12c6b8e..1fc8577 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,7 @@ A curated list of awesome Java frameworks, libraries and software.
 
 *Libraries that provide caching facilities.*
 
+- [cache2k](https://cache2k.org) - In-memory high performance caching library.
 - [Caffeine](https://github.com/ben-manes/caffeine) - High-performance, near-optimal caching library.
 - [Ehcache](http://www.ehcache.org) - Distributed general-purpose cache.
 - [Infinispan](http://infinispan.org) - Highly concurrent key/value datastore used for caching.