diff --git a/go/logging/BUILD.bazel b/go/logging/BUILD.bazel
index 4a5feae..e7d76f1 100644
--- a/go/logging/BUILD.bazel
+++ b/go/logging/BUILD.bazel
@@ -2,7 +2,10 @@
 
 go_library(
     name = "logging",
-    srcs = ["leveled.go"],
+    srcs = [
+        "backend.go",
+        "leveled.go",
+    ],
     importpath = "source.monogon.dev/go/logging",
     visibility = ["//visibility:public"],
 )