diff --git a/packages/ngtools/webpack/src/transformers/replace_resources.ts b/packages/ngtools/webpack/src/transformers/replace_resources.ts
index 22428e15e262..a4dc871044e9 100644
--- a/packages/ngtools/webpack/src/transformers/replace_resources.ts
+++ b/packages/ngtools/webpack/src/transformers/replace_resources.ts
@@ -17,10 +17,22 @@ export function replaceResources(
 
     const visitNode: ts.Visitor = (node: ts.Decorator) => {
       if (ts.isClassDeclaration(node)) {
-        node.decorators = ts.visitNodes(
+        const decorators = ts.visitNodes(
           node.decorators,
           (node: ts.Decorator) => visitDecorator(node, typeChecker),
         );
+
+        // todo: we need to investigate and confirm that using
+        //  `updateClassDeclaration` has no regressions
+        return ts.updateClassDeclaration(
+          node,
+          decorators,
+          node.modifiers,
+          node.name,
+          node.typeParameters,
+          node.heritageClauses,
+          node.members,
+        );
       }
 
       return ts.visitEachChild(node, visitNode, context);