diff --git a/app/matrix/wellknown/BUILD b/app/matrix/wellknown/BUILD
new file mode 100644
index 0000000..1cf4138
--- /dev/null
+++ b/app/matrix/wellknown/BUILD
@@ -0,0 +1,25 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    importpath = "code.hackerspace.pl/hscloud/app/matrix/wellknown",
+    visibility = ["//visibility:private"],
+    deps = [
+        "//go/mirko:go_default_library",
+        "@com_github_golang_glog//:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "wellknown",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["server_test.go"],
+    embed = [":go_default_library"],
+    deps = ["@com_github_go_test_deep//:go_default_library"],
+)