diff --git a/action.yml b/action.yml
index d83acc2..b4054fe 100644
--- a/action.yml
+++ b/action.yml
@@ -34,7 +34,8 @@ inputs:
   codex-version:
     description: "Version of `@openai/codex` to install."
     required: false
-    default: ""
+    # Temporary fix to prevent picking up 0.59.0.
+    default: "0.58.0"
   codex-args:
     description: "Additional args to pass through to `codex exec`. If this value starts with `[`, it will be parsed as a JSON array; otherwise, it will be parsed as a shell-like string."
     required: false