diff --git a/e2e/binary/romanize/BUILD.bazel b/e2e/binary/romanize/BUILD.bazel
index 2590081500a662366c7ddb04c848e1c7a68972f2..4f154e1b97a527591ad2f9f24671fd4dda449513 100644
--- a/e2e/binary/romanize/BUILD.bazel
+++ b/e2e/binary/romanize/BUILD.bazel
@@ -1,11 +1,21 @@
-load("@bazel_skylib//rules:build_test.bzl", "build_test")
+load("@rules_python_pytest//python_pytest:defs.bzl", "py_pytest_test")
 
-# TODO: write an _actual_ test for `romanize`
+py_pytest_test(
+    name = "pytest",
+    size = "small",
+    srcs = ["romanize.py"],
+    data = [
+        "@ape//ape:romanize",
+    ],
+    deps = [
+        "//binary:pytest",
+    ],
+)
 
-build_test(
+test_suite(
     name = "romanize",
-    size = "small",
-    tags = ["stub"],
-    targets = ["@ape//ape:romanize"],
+    tests = [
+        "pytest",
+    ],
     visibility = ["//:__subpackages__"],
 )
diff --git a/e2e/binary/romanize/romanize.py b/e2e/binary/romanize/romanize.py
new file mode 100644
index 0000000000000000000000000000000000000000..3798f08b16a6b670cbdb861521e02a72d385a77c
--- /dev/null
+++ b/e2e/binary/romanize/romanize.py
@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from subprocess import run
+
+from binary.tool import Tool
+
+
+def test_romanize(tool: Tool) -> None:
+    binary = tool("romanize")
+
+    cmd = (binary)
+    stdin = 'Mjød'
+    result = run(cmd, check=True, timeout=30, input=stdin, capture_output=True, text=True)
+
+    assert result.stdout == 'MJOED'