diff --git a/README.md b/README.md
index abb4407..be4b6f6 100644
--- a/README.md
+++ b/README.md
@@ -32,4 +32,5 @@ Primarily for kv usage, and possibly for liveness testing of services in the dat
 * https://github.com/ethereum/wiki/wiki/Whisper
   * https://archive.fosdem.org/2018/schedule/event/whisper/
 * https://www.consul.io/
+* https://github.com/cloudevents/spec