diff --git a/keyserver/package.json b/keyserver/package.json
--- a/keyserver/package.json
+++ b/keyserver/package.json
@@ -60,6 +60,7 @@
     "ethers": "^5.7.2",
     "express": "^4.17.3",
     "express-ws": "^4.0.0",
+    "file-type": "^12.3.0",
     "firebase-admin": "^10.1.0",
     "geoip-lite": "^1.4.5",
     "invariant": "^2.2.4",