diff --git a/docs/project/tsconfig.md b/docs/project/tsconfig.md
index 023a3d648..e28270305 100644
--- a/docs/project/tsconfig.md
+++ b/docs/project/tsconfig.md
@@ -8,7 +8,7 @@ i.e. an empty JSON file at the *root* of your project. This way TypeScript will
 ### compilerOptions
 You can customize the compiler options using `compilerOptions`:
 
-```json
+```jsonc
 {
   "compilerOptions": {