diff --git a/pr_agent/algo/__init__.py b/pr_agent/algo/__init__.py
index cab47378..f22eb97c 100644
--- a/pr_agent/algo/__init__.py
+++ b/pr_agent/algo/__init__.py
@@ -11,6 +11,8 @@ MAX_TOKENS = {
     'gpt-4-32k': 32000,
     'gpt-4-1106-preview': 128000, # 128K, but may be limited by config.max_model_tokens
     'gpt-4-0125-preview': 128000,  # 128K, but may be limited by config.max_model_tokens
+    'gpt-4o': 128000,  # 128K, but may be limited by config.max_model_tokens
+    'gpt-4o-2024-05-13': 128000,  # 128K, but may be limited by config.max_model_tokens
     'gpt-4-turbo-preview': 128000,  # 128K, but may be limited by config.max_model_tokens
     'gpt-4-turbo-2024-04-09': 128000,  # 128K, but may be limited by config.max_model_tokens
     'gpt-4-turbo': 128000,  # 128K, but may be limited by config.max_model_tokens
diff --git a/requirements.txt b/requirements.txt
index 924d2bb2..283a319a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ PyYAML==6.0.1
 python-gitlab==3.15.0
 retry==0.9.2
 starlette-context==0.3.6
-tiktoken==0.5.2
+tiktoken==0.7.0
 ujson==5.8.0
 uvicorn==0.22.0
 tenacity==8.2.3