diff --git a/_vendors.yml b/_vendors.yml
index d5dd79d..bfa551f 100644
--- a/_vendors.yml
+++ b/_vendors.yml
@@ -120,14 +120,14 @@ gitalk_css:
   integrity: sha256-AJnUHL7dBv6PGaeyPQJcgQPDjt/Hn/PvYZde1iqfp8U=
 firebase_app:
   name: firebase
-  version: 8.4.2
+  version: 8.6.3
   file: firebase-app.js
-  integrity: sha256-aS+rZ1asHNtiV5W1+xXQ5lgWF8vMvIqUGYkHJetOD9A=
+  integrity: sha256-TcuvUUV2YPD07buRa6IPu1ADulu6kj1g5BSU3cqdCRo=
 firebase_firestore:
   name: firebase
-  version: 8.4.2
+  version: 8.6.3
   file: firebase-firestore.js
-  integrity: sha256-hCnXfO8mXFtVSaEv9mZUk6Dw2xIcWZj+ABYvThpJCJg=
+  integrity: sha256-noZMc+mnoIXmuv5hOXyiPIDY2KnxDjmSRXYmDBDxMR8=
 algolia_search:
   name: algoliasearch
   version: 4.9.1