diff --git a/install/data/defaults.json b/install/data/defaults.json
index d60984e99e..47a3e8d4a2 100644
--- a/install/data/defaults.json
+++ b/install/data/defaults.json
@@ -42,7 +42,7 @@
     "registrationApprovalType": "normal",
     "allowAccountDelete": 1,
     "privateUploads": 0,
-    "allowedFileExtensions": "png,jpg,bmp,txt",
+    "allowedFileExtensions": "png,jpg,bmp,txt,webp,webm,mp4,gif",
     "uploadRateLimitThreshold": 10,
     "uploadRateLimitCooldown": 60,
     "allowUserHomePage": 1,
@@ -188,4 +188,4 @@
     "maxReconnectionAttempts": 5,
     "reconnectionDelay": 1500,
     "disableCustomUserSkins": 0
-}
\ No newline at end of file
+}