diff --git a/.prettierignore b/.prettierignore
index fd39837..c0b7b7d 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -3,4 +3,7 @@ node_modules
 .vscode/
 
 # Typescript is our source-code; generated JS and d.ts is left unlinted.
-lib/
\ No newline at end of file
+lib/
+
+# Generated by release-please on every release; not hand-formatted.
+CHANGELOG.md
\ No newline at end of file