diff --git a/src/util/importClassesFromDirectories.ts b/src/util/importClassesFromDirectories.ts
index d8c75bc7..e90ec694 100644
--- a/src/util/importClassesFromDirectories.ts
+++ b/src/util/importClassesFromDirectories.ts
@@ -3,7 +3,7 @@ import * as path from 'path';
 /**
  * Loads all exported classes from the given directory.
  */
-export function importClassesFromDirectories(directories: string[], formats = ['.js', '.ts']): Function[] {
+export function importClassesFromDirectories(directories: string[], formats = ['.js', '.ts', '.tsx']): Function[] {
   const loadFileClasses = function (exported: any, allLoaded: Function[]) {
     if (exported instanceof Function) {
       allLoaded.push(exported);