diff --git a/tests/conftest.py b/tests/conftest.py
index 2d2151d4..f66ecaa3 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -34,6 +34,20 @@ def run_cache_bumps_immediately():
         yield
 
 
+@pytest.fixture(autouse=True)
+def block_pushover():
+    """Never send real Pushover notifications from tests. Callers import
+    send_pushover by name, so each import site is patched; tests that assert on
+    it re-patch the same target, and the inner patch takes precedence."""
+    with (
+        patch("users.utils.send_pushover"),
+        patch("users.views.send_pushover"),
+        patch("users.management.commands.sync_opencollective_donors.send_pushover"),
+        patch("api.management.commands.notify_throttled_clients.send_pushover"),
+    ):
+        yield
+
+
 @pytest.fixture(autouse=True)
 def isolated_login_throttle():
     """Give each test its own failed-login counters. Tests share the real Redis