diff --git a/sync.py b/sync.py
index bcbb2cf..ea4d4b1 100644
--- a/sync.py
+++ b/sync.py
@@ -68,7 +68,7 @@ async def docker_build_task(dockerfile: str, target: str) -> int | None:
             return r
     return 0
 
-semaphore = asyncio.Semaphore(5)
+semaphore = asyncio.Semaphore(20)
 
 async def limited_task[T: Any](semaphore: asyncio.Semaphore, task: Callable[[], Coroutine[None, None, T]]) -> T:
     async with semaphore: