diff --git a/modoboa/admin/settings.py b/modoboa/admin/settings.py
new file mode 100644
index 000000000..4898b0ddf
--- /dev/null
+++ b/modoboa/admin/settings.py
@@ -0,0 +1,27 @@
+"""Default admin app settings."""
+
+import os
+
+PLUGIN_BASE_DIR = os.path.dirname(__file__)
+
+ADMIN_STATS_FILES = {
+    "dev": os.path.join(
+        PLUGIN_BASE_DIR, "../frontend/webpack-stats.json"),
+    "prod": os.path.join(
+        PLUGIN_BASE_DIR, "static/admin/webpack-stats.json")
+}
+
+
+def apply(settings):
+    """Modify settings."""
+    DEBUG = settings['DEBUG']
+    if "webpack_loader" not in settings["INSTALLED_APPS"]:
+        settings["INSTALLED_APPS"] += ("webpack_loader", )
+    settings["WEBPACK_LOADER"] = {
+        "CALENDAR": {
+            "CACHE": not DEBUG,
+            "BUNDLE_DIR_NAME": "admin/",
+            "STATS_FILE": ADMIN_STATS_FILES.get("dev" if DEBUG else "prod"),
+            "IGNORE": [".+\.hot-update.js", ".+\.map"]
+        }
+    }
diff --git a/modoboa/core/commands/templates/settings.py.tpl b/modoboa/core/commands/templates/settings.py.tpl
index 3f7ec5cf8..6b0c9f68f 100644
--- a/modoboa/core/commands/templates/settings.py.tpl
+++ b/modoboa/core/commands/templates/settings.py.tpl
@@ -299,6 +299,10 @@ SILENCED_SYSTEM_CHECKS = [
     "security.W019",  # modoboa uses iframes to display e-mails
 ]
 
+# Load admin settings
+from modoboa.admin import settings as admin_settings
+admin_settings.apply(globals())
+
 # Load settings from extensions
 {% for extension in extra_settings %}
 try: