diff --git a/lib/hash.ts b/lib/hash.ts
index 2dae20a..f177171 100644
--- a/lib/hash.ts
+++ b/lib/hash.ts
@@ -13,8 +13,7 @@ export default function (manifestName: string) {
     const mappings: { [path: string]: string } = {};
 
     return new Transform({
-        readableObjectMode: true,
-        writableObjectMode: true,
+        objectMode: true,
         transform(chunk: File, _, callback) {
             const hash = PRODUCTION ? fileHash(chunk.contents as Buffer) : "00000000";
             const newName = `${chunk.basename.substring(0, chunk.basename.length - chunk.extname.length)}.${hash.substring(0, 8)}${chunk.extname}`;
diff --git a/lib/tasks/articles.ts b/lib/tasks/articles.ts
index 5338f11..666e44b 100644
--- a/lib/tasks/articles.ts
+++ b/lib/tasks/articles.ts
@@ -62,8 +62,7 @@ function renderArticle() {
     reloadAssets();
 
     return new Transform({
-        readableObjectMode: true,
-        writableObjectMode: true,
+        objectMode: true,
         async transform(file: File, _, callback) {
             try {
                 const slug = basename(file.path, ".asciidoc");
diff --git a/lib/tasks/fonts.ts b/lib/tasks/fonts.ts
index 814f8a5..203023b 100644
--- a/lib/tasks/fonts.ts
+++ b/lib/tasks/fonts.ts
@@ -13,8 +13,7 @@ const FONT_PRESETS = {
 
 function compileFont() {
     return new Transform({
-        readableObjectMode: true,
-        writableObjectMode: true,
+        objectMode: true,
         async transform(chunk: File, _, callback) {
             const [, variant, weight] = /([A-Z][a-z]+)-(\w+)\.ttf$/.exec(chunk.basename);
             const tmpOutput = tmp.fileSync({ discardDescriptor: true });