diff --git a/schema/firebase-config.json b/schema/firebase-config.json
index ca1f66754b1..b4bb9139591 100644
--- a/schema/firebase-config.json
+++ b/schema/firebase-config.json
@@ -128,6 +128,10 @@
         }
     },
     "properties": {
+        "$schema": {
+            "format": "uri",
+            "type": "string"
+        },
         "database": {
             "anyOf": [
                 {
diff --git a/src/firebaseConfig.ts b/src/firebaseConfig.ts
index f1395ba13c7..9d76951f59c 100644
--- a/src/firebaseConfig.ts
+++ b/src/firebaseConfig.ts
@@ -234,6 +234,10 @@ export type EmulatorsConfig = {
 export type ExtensionsConfig = Record<string, string>;
 
 export type FirebaseConfig = {
+  /**
+   * @TJS-format uri
+   */
+  $schema?: string;
   database?: DatabaseConfig;
   firestore?: FirestoreConfig;
   functions?: FunctionsConfig;