diff --git a/script/prepare_release_script_test.go b/script/prepare_release_script_test.go
new file mode 100644
index 0000000..923c4c0
--- /dev/null
+++ b/script/prepare_release_script_test.go
@@ -0,0 +1,50 @@
+package script_test
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPrepareReleaseScript_UsesVociferateReleaseprep(t *testing.T) {
+	wd, err := os.Getwd()
+	require.NoError(t, err)
+
+	repoRoot := filepath.Dir(wd)
+	tempBin := t.TempDir()
+	argsLog := filepath.Join(tempBin, "go-args.log")
+	fakeGoPath := filepath.Join(tempBin, "go")
+
+	fakeGo := `#!/usr/bin/env bash
+set -euo pipefail
+printf '%s\n' "$*" > "$GO_ARGS_LOG"
+`
+	require.NoError(t, os.WriteFile(fakeGoPath, []byte(fakeGo), 0o755))
+
+	cmd := exec.Command("bash", filepath.Join(repoRoot, "script", "prepare-release.sh"), "v1.2.3")
+	cmd.Dir = repoRoot
+	cmd.Env = append(os.Environ(),
+		"PATH="+tempBin+":"+os.Getenv("PATH"),
+		"GO_ARGS_LOG="+argsLog,
+	)
+
+	output, err := cmd.CombinedOutput()
+	require.NoError(t, err, string(output))
+
+	invocationBytes, err := os.ReadFile(argsLog)
+	require.NoError(t, err)
+	invocation := strings.TrimSpace(string(invocationBytes))
+
+	require.Contains(t, invocation, "run git.hrafn.xyz/aether/vociferate/cmd/releaseprep@latest")
+	require.Contains(t, invocation, "--root "+repoRoot)
+	require.Contains(t, invocation, "--version v1.2.3")
+	require.Contains(t, invocation, "--version-file internal/homesick/version/version.go")
+	require.Contains(t, invocation, "--version-pattern const String = \"([^\"]+)\"")
+	require.Contains(t, invocation, "--changelog changelog.md")
+	require.Regexp(t, regexp.MustCompile(`--date [0-9]{4}-[0-9]{2}-[0-9]{2}`), invocation)
+}
\ No newline at end of file