diff --git a/.github/codex/home/config.toml b/.github/codex/home/config.toml
index bb1b362b..8e800ca0 100644
--- a/.github/codex/home/config.toml
+++ b/.github/codex/home/config.toml
@@ -1,3 +1,3 @@
-model = "o3"
+model = "gpt-5"
 
 # Consider setting [mcp_servers] here!