diff --git a/.prettierignore b/.prettierignore
index 354d17dc543..85acf0e9ebc 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -24,3 +24,8 @@ vscode-ng-language-service/syntaxes/test/data/*.ts
 
 # Ignore goldens MD files
 goldens/**/*.api.md
+
+# adev generated files
+adev/src/content/aria/**/*.json
+adev/src/content/cli/**/*.json
+adev/src/content/cdk/**/*.json