diff --git a/metropolis/pkg/supervisor/BUILD.bazel b/metropolis/pkg/supervisor/BUILD.bazel
index f51612c..d096c5d 100644
--- a/metropolis/pkg/supervisor/BUILD.bazel
+++ b/metropolis/pkg/supervisor/BUILD.bazel
@@ -22,5 +22,7 @@
     name = "supervisor_test",
     srcs = ["supervisor_test.go"],
     embed = [":supervisor"],
+    # TODO: https://github.com/monogon-dev/monogon/issues/131
+    flaky = True,
     deps = ["//metropolis/pkg/logtree"],
 )