diff --git a/metropolis/pkg/blockdev/BUILD.bazel b/metropolis/pkg/blockdev/BUILD.bazel
index c0c98d3..4eff0d4 100644
--- a/metropolis/pkg/blockdev/BUILD.bazel
+++ b/metropolis/pkg/blockdev/BUILD.bazel
@@ -4,6 +4,7 @@
     name = "blockdev",
     srcs = [
         "blockdev.go",
+        "blockdev_darwin.go",
         "blockdev_linux.go",
         "memory.go",
     ],
@@ -13,6 +14,12 @@
         "@io_bazel_rules_go//go/platform:android": [
             "@org_golang_x_sys//unix",
         ],
+        "@io_bazel_rules_go//go/platform:darwin": [
+            "@org_golang_x_sys//unix",
+        ],
+        "@io_bazel_rules_go//go/platform:ios": [
+            "@org_golang_x_sys//unix",
+        ],
         "@io_bazel_rules_go//go/platform:linux": [
             "@org_golang_x_sys//unix",
         ],