diff --git a/src/runboat/github.py b/src/runboat/github.py
index 96aca42..b34c3e6 100644
--- a/src/runboat/github.py
+++ b/src/runboat/github.py
@@ -2,7 +2,7 @@ from enum import Enum
 from typing import Any, Optional
 
 import httpx
-from pydantic import BaseModel
+from pydantic import BaseModel, validator
 
 from .exceptions import NotFoundOnGitHub
 from .settings import settings
@@ -29,6 +29,11 @@ class CommitInfo(BaseModel):
     pr: Optional[int]
     git_commit: str
 
+    @validator("repo")
+    @classmethod
+    def validate_repo(cls, v: str) -> str:
+        return v.lower()
+
 
 async def get_branch_info(repo: str, branch: str) -> CommitInfo:
     branch_data = await _github_request("GET", f"/repos/{repo}/git/ref/heads/{branch}")