diff --git a/selfdrive/manager/build.py b/selfdrive/manager/build.py
index 04769526ff..d6429092ea 100755
--- a/selfdrive/manager/build.py
+++ b/selfdrive/manager/build.py
@@ -14,7 +14,7 @@ from selfdrive.hardware import TICI
 from selfdrive.swaglog import cloudlog, add_file_handler
 from selfdrive.version import get_dirty
 
-MAX_CACHE_SIZE = 2e9
+MAX_CACHE_SIZE = 4e9 if "CI" in os.environ else 2e9
 CACHE_DIR = Path("/data/scons_cache" if TICI else "/tmp/scons_cache")
 
 TOTAL_SCONS_NODES = 2405