diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6955f5..6d41c61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 ### Bugs Fixed
 
 * hclwrite: The parser will now correctly include the `(` and `)` tokens when an expression is surrounded by parentheses. Previously it would incorrectly recognize those tokens as being extraneous tokens outside of the expression. ([#426](https://github.com/hashicorp/hcl/pull/426))
+* hclwrite: The formatter will now remove (rather than insert) spaces between the `!` (unary boolean "not") operator and its subsequent operand. ([#403](https://github.com/hashicorp/hcl/pull/403))
 
 ## v2.7.2 (November 30, 2020)