diff --git a/src/schemas/0.2.ts b/src/schemas/0.2.ts
index 1669ff9..3f41d1d 100644
--- a/src/schemas/0.2.ts
+++ b/src/schemas/0.2.ts
@@ -76,9 +76,11 @@ export const McpbUserConfigValuesSchema = z.record(
   z.union([z.string(), z.number(), z.boolean(), z.array(z.string())]),
 );
 
-export const McpbManifestSchema = z.strictObject({
-  $schema: z.string().optional(),
-  manifest_version: z.literal("0.2"),
+export const McpbManifestSchema = z
+  .strictObject({
+    $schema: z.string().optional(),
+    dxt_version: z.literal("0.2").optional().describe("@deprecated Use manifest_version instead"),
+    manifest_version: z.literal("0.2").optional(),
   name: z.string(),
   display_name: z.string().optional(),
   version: z.string(),
@@ -103,7 +105,11 @@ export const McpbManifestSchema = z.strictObject({
   user_config: z
     .record(z.string(), McpbUserConfigurationOptionSchema)
     .optional(),
-});
+})
+  .refine((data) => !!(data.dxt_version || data.manifest_version), {
+    message:
+      "Either 'dxt_version' (deprecated) or 'manifest_version' must be provided",
+  });
 
 export const McpbSignatureInfoSchema = z.strictObject({
   status: z.enum(["signed", "unsigned", "self-signed"]),
diff --git a/src/schemas_loose/0.2.ts b/src/schemas_loose/0.2.ts
index ccc1cd7..7d6834b 100644
--- a/src/schemas_loose/0.2.ts
+++ b/src/schemas_loose/0.2.ts
@@ -79,7 +79,8 @@ export const McpbUserConfigValuesSchema = z.record(
 export const McpbManifestSchema = z
   .object({
     $schema: z.string().optional(),
-    manifest_version: z.literal("0.2"),
+    dxt_version: z.literal("0.2").optional().describe("@deprecated Use manifest_version instead"),
+    manifest_version: z.literal("0.2").optional(),
     name: z.string(),
     display_name: z.string().optional(),
     version: z.string(),
@@ -105,7 +106,11 @@ export const McpbManifestSchema = z
       .record(z.string(), McpbUserConfigurationOptionSchema)
       .optional(),
   })
-  .passthrough();
+  .passthrough()
+  .refine((data) => !!(data.dxt_version || data.manifest_version), {
+    message:
+      "Either 'dxt_version' (deprecated) or 'manifest_version' must be provided",
+  });
 
 export const McpbSignatureInfoSchema = z.object({
   status: z.enum(["signed", "unsigned", "self-signed"]),