diff --git a/metropolis/cli/metroctl/BUILD.bazel b/metropolis/cli/metroctl/BUILD.bazel
index af520e1..60c59b6 100644
--- a/metropolis/cli/metroctl/BUILD.bazel
+++ b/metropolis/cli/metroctl/BUILD.bazel
@@ -58,6 +58,7 @@
         "@io_k8s_apimachinery//pkg/apis/meta/v1:meta",
         "@io_k8s_client_go//pkg/apis/clientauthentication/v1:clientauthentication",
         "@org_golang_google_grpc//:go_default_library",
+        "@org_golang_x_sync//semaphore",
     ],
 )