diff --git a/metropolis/test/launch/cluster/BUILD.bazel b/metropolis/test/launch/cluster/BUILD.bazel
index bf010d2..abcdc07 100644
--- a/metropolis/test/launch/cluster/BUILD.bazel
+++ b/metropolis/test/launch/cluster/BUILD.bazel
@@ -5,6 +5,7 @@
     srcs = [
         "cluster.go",
         "insecure_key.go",
+        "prefixed_stdio.go",
     ],
     data = [
         "//metropolis/node:image",
@@ -20,6 +21,7 @@
         "//metropolis/node:go_default_library",
         "//metropolis/node/core/identity:go_default_library",
         "//metropolis/node/core/rpc:go_default_library",
+        "//metropolis/pkg/logbuffer:go_default_library",
         "//metropolis/proto/api:go_default_library",
         "//metropolis/proto/common:go_default_library",
         "//metropolis/test/launch:go_default_library",