diff --git a/BUILD.bazel b/BUILD.bazel
index 01e002f..a9fcd2f 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -8,7 +8,10 @@ haskell_library(
     name = "hs-msgpack-binary",
     srcs = glob(["src/**/*.*hs"]),
     src_strip_prefix = "src",
-    tags = ["no-cross"],
+    tags = [
+        "haskell",
+        "no-cross",
+    ],
     version = "0.0.17",
     visibility = ["//visibility:public"],
     deps = [
diff --git a/tools/BUILD.bazel b/tools/BUILD.bazel
index 0ab9c75..a13c3a8 100644
--- a/tools/BUILD.bazel
+++ b/tools/BUILD.bazel
@@ -3,7 +3,10 @@ load("@rules_haskell//haskell:defs.bzl", "haskell_binary")
 haskell_binary(
     name = "msgpack-parser",
     srcs = ["msgpack-parser.hs"],
-    tags = ["no-cross"],
+    tags = [
+        "haskell",
+        "no-cross",
+    ],
     visibility = ["//tools/haskell:__pkg__"],
     deps = [
         "//hs-msgpack-arbitrary",
@@ -15,7 +18,10 @@ haskell_binary(
 haskell_binary(
     name = "msgpack-gen-sample",
     srcs = ["msgpack-gen-sample.hs"],
-    tags = ["no-cross"],
+    tags = [
+        "haskell",
+        "no-cross",
+    ],
     visibility = ["//tools/haskell:__pkg__"],
     deps = [
         "//hs-msgpack-arbitrary",