diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7726898..c64413b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.0 (2021-06-18)
+
+- [d6b4d09](https://github.com/craigahobbs/chisel/commit/d6b4d09) - chisel 1.0.0
+
 ## chisel 0.9.129 (2021-06-18)
 
 - [4d73381](https://github.com/craigahobbs/chisel/commit/4d73381) - use chisel-doc