diff --git a/server/main.py b/server/main.py
index 2de99b4..21665f4 100644
--- a/server/main.py
+++ b/server/main.py
@@ -60,7 +60,11 @@ async def lifespan(_app: fastapi.FastAPI) -> typing.AsyncIterator[State]:
     session_maker = async_sessionmaker(engine)
     try:
         await db_connection_check(engine)
-        async with httpx.AsyncClient("https://api.github.com") as gh_http_client, httpx.AsyncClient("https://challenges.cloudflare.com") as cf_http_client:
+        async with httpx.AsyncClient(
+            base_url="https://api.github.com"
+        ) as gh_http_client, httpx.AsyncClient(
+            base_url="https://challenges.cloudflare.com"
+        ) as cf_http_client:
             yield {
                 "gh_http_client": gh_http_client,
                 "cf_http_client": cf_http_client,