diff --git a/tests/conftest.py b/tests/conftest.py
index d310d36..e15d398 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -252,6 +252,7 @@ def project_no_init(tmp_path, mocker):
     old_config_map = Config._config_map.copy()
     tmp_path.joinpath("caches").mkdir(parents=True)
     p.global_config["cache_dir"] = tmp_path.joinpath("caches").as_posix()
+    p.global_config["check_update"] = False
     do_use(p, getattr(sys, "_base_executable", sys.executable))
     with temp_environ():
         os.environ.pop("VIRTUAL_ENV", None)