diff --git a/aider/args.py b/aider/args.py
index a77d28040..0b32bd3c5 100644
--- a/aider/args.py
+++ b/aider/args.py
@@ -74,7 +74,7 @@ def get_parser(default_config_files, git_root):
         const=gpt_4_model,
         help=f"Use {gpt_4_model} model for the main chat",
     )
-    gpt_4o_model = "gpt-4o"
+    gpt_4o_model = "gpt-4o-2024-08-06"
     group.add_argument(
         "--4o",
         action="store_const",
diff --git a/aider/website/_data/edit_leaderboard.yml b/aider/website/_data/edit_leaderboard.yml
index 426c86336..7aa2e1343 100644
--- a/aider/website/_data/edit_leaderboard.yml
+++ b/aider/website/_data/edit_leaderboard.yml
@@ -387,7 +387,7 @@
 
 - dirname: 2024-05-13-17-39-05--gpt-4o-diff
   test_cases: 133
-  model: gpt-4o
+  model: gpt-4o-2024-05-13
   released: 2024-05-13
   edit_format: diff
   commit_hash: b6cd852