diff --git a/metropolis/pkg/event/BUILD.bazel b/metropolis/pkg/event/BUILD.bazel
index 92405ff..e6506b5 100644
--- a/metropolis/pkg/event/BUILD.bazel
+++ b/metropolis/pkg/event/BUILD.bazel
@@ -5,4 +5,5 @@
     srcs = ["event.go"],
     importpath = "source.monogon.dev/metropolis/pkg/event",
     visibility = ["//visibility:public"],
+    deps = ["//metropolis/pkg/supervisor"],
 )