diff --git a/codex-rs/core/config.schema.json b/codex-rs/core/config.schema.json
index 7e607de758..d502e06dd5 100644
--- a/codex-rs/core/config.schema.json
+++ b/codex-rs/core/config.schema.json
@@ -389,6 +389,9 @@
             "experimental_windows_sandbox": {
               "type": "boolean"
             },
+            "external_migrate": {
+              "type": "boolean"
+            },
             "fast_mode": {
               "type": "boolean"
             },
@@ -2277,6 +2280,9 @@
         "experimental_windows_sandbox": {
           "type": "boolean"
         },
+        "external_migrate": {
+          "type": "boolean"
+        },
         "fast_mode": {
           "type": "boolean"
         },