diff --git a/config/base-codex.settings.json b/config/base-codex.settings.json
index 9c92f741..20621941 100644
--- a/config/base-codex.settings.json
+++ b/config/base-codex.settings.json
@@ -5,6 +5,6 @@
     "ANTHROPIC_MODEL": "gpt-5.3-codex",
     "ANTHROPIC_DEFAULT_OPUS_MODEL": "gpt-5.3-codex",
     "ANTHROPIC_DEFAULT_SONNET_MODEL": "gpt-5.3-codex",
-    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "gpt-5-mini"
+    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "gpt-5-codex-mini"
   }
 }