diff --git a/src/schemas/json/host.json b/src/schemas/json/host.json
index e5a5acf14da..87c288fa4b2 100644
--- a/src/schemas/json/host.json
+++ b/src/schemas/json/host.json
@@ -616,7 +616,7 @@
       "type": "object",
       "properties": {
         "extensionBundle": {
-          "description": "Configuration settings for extension bundle",
+          "description": "Configuration settings for extension bundle - a predefined set of compatible binding extensions to a function app",
           "type": "object",
           "properties": {
             "id": {
@@ -627,14 +627,18 @@
             "version": {
               "description": "The version of the extension bundle.",
               "type": "string",
-              "examples": ["[1.*, 2.0.0)", "[2.*, 3.0.0)"],
-              "default": "[2.*, 3.0.0)"
+              "examples": ["[4.*, 5.0.0)"],
+              "default": "[4.*, 5.0.0)"
             }
           },
           "examples": [
             {
               "id": "Microsoft.Azure.Functions.ExtensionBundle",
-              "version": "[2.*, 3.0.0)"
+              "version": "[4.*, 5.0.0)"
+            },
+            {
+              "id": "Microsoft.Azure.Functions.ExtensionBundle.Preview",
+              "version": "[4.*, 5.0.0)"
             }
           ],
           "additionalProperties": false
@@ -1521,7 +1525,7 @@
           },
           "extensionBundle": {
             "id": "Microsoft.Azure.Functions.ExtensionBundle",
-            "version": "[2.*, 3.0.0)"
+            "version": "[4.*, 5.0.0)"
           }
         }
       ],
diff --git a/src/test/host/host.v2.json b/src/test/host/host.v2.json
index a3a5723a037..5a74ae8177c 100644
--- a/src/test/host/host.v2.json
+++ b/src/test/host/host.v2.json
@@ -9,7 +9,7 @@
   },
   "extensionBundle": {
     "id": "Microsoft.Azure.Functions.ExtensionBundle",
-    "version": "[1.*, 2.0.0)"
+    "version": "[4.*, 5.0.0)"
   },
   "extensions": {
     "blobs": {