diff --git a/gulpfile.js b/gulpfile.js
index 9649c619..e6d1137e 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -117,11 +117,11 @@ function vendor(done) {
         'node_modules/bootstrap/dist/css/bootstrap.min.css'
     ]).pipe(gulp.dest('assets/vendor/bootstrap'));
 
-    // fontawesome-free
+    // @fortawesome-fontawesome-free
     gulp.src([
         'node_modules/@fortawesome/fontawesome-free/js/fontawesome.min.js',
         'node_modules/@fortawesome/fontawesome-free/js/solid.min.js'
-    ]).pipe(gulp.dest('assets/vendor/fontawesome-free'));
+    ]).pipe(gulp.dest('assets/vendor/@fortawesome-fontawesome-free'));
 
     // cookieconsent
     gulp.src([
@@ -168,10 +168,13 @@ function vendor(done) {
     gulp.src(['node_modules/moment/min/moment.min.js']).pipe(gulp.dest('assets/vendor/moment'));
 
     // moment-timezone
-    gulp.src(['node_modules/moment-timezone/builds/moment-timezone.min.js']).pipe(
+    gulp.src(['node_modules/moment-timezone/builds/moment-timezone-with-data.min.js']).pipe(
         gulp.dest('assets/vendor/moment-timezone')
     );
 
+    // @popperjs-core
+    gulp.src(['node_modules/@popperjs/core/dist/umd/popper.min.js']).pipe(gulp.dest('assets/vendor/@popperjs-core'));
+
     // select2
     gulp.src(['node_modules/select2/dist/js/select2.min.js']).pipe(gulp.dest('assets/vendor/select2'));
 
diff --git a/package.json b/package.json
index 895a7983..fb68ae41 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
   },
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.15.4",
+    "@popperjs/core": "^2.10.2",
     "bootstrap": "^4.5.3",
     "cookieconsent": "^3.1.1",
     "datejs": "0.0.2",