diff --git a/CHANGELOG.md b/CHANGELOG.md
index c0c1c06..0fe46c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.4
+
+* Add a System DRG that represent a referentially transparent of evaluated bytes
+  while using lazy evaluation for future entropy values.
+
 ## 0.3
 
 * Allow drgNew to run in any MonadRandom, providing cascading initialization