diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 95f3f9d..daf5f58 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,11 +21,30 @@ jobs:
         with:
           node-version: '18'
 
-      - name: Install dependencies
-        run: yarn install
+      - name: Bootstrap
+        run: ./scripts/bootstrap
 
       - name: Check types
         run: ./scripts/lint
+
+  build:
+    name: build
+    runs-on: ubuntu-latest
+    
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+
+      - name: Bootstrap
+        run: ./scripts/bootstrap
+
+      - name: Check build
+        run: ./scripts/build
   test:
     name: test
     runs-on: ubuntu-latest
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2537c1f..218393f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.0"
+  ".": "0.4.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f39326..1542e99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## 0.4.1 (2024-09-06)
+
+Full Changelog: [v0.4.0...v0.4.1](https://github.com/writer/writer-node/compare/v0.4.0...v0.4.1)
+
+### Bug Fixes
+
+* **uploads:** avoid making redundant memory copies ([#55](https://github.com/writer/writer-node/issues/55)) ([f864fb3](https://github.com/writer/writer-node/commit/f864fb33da970311e3ef32cac083ba5543fe6a7c))
+
+
+### Chores
+
+* **internal:** codegen related update ([#51](https://github.com/writer/writer-node/issues/51)) ([fcebf50](https://github.com/writer/writer-node/commit/fcebf50518f24dd765d675b94afd3937ac66dd5b))
+* **internal:** dependency updates ([#53](https://github.com/writer/writer-node/issues/53)) ([ab3c399](https://github.com/writer/writer-node/commit/ab3c399044f36aa74f21148770869c034c4185ab))
+* Update completions-streaming.ts ([303a7b4](https://github.com/writer/writer-node/commit/303a7b434686bed3e8b2ac4ddc68daa329ecf804))
+
 ## 0.4.0 (2024-08-14)
 
 Full Changelog: [v0.3.0...v0.4.0](https://github.com/writer/writer-node/compare/v0.3.0...v0.4.0)
diff --git a/package.json b/package.json
index 977f7b2..faae8ea 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "writer-sdk",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "The official TypeScript library for the Writer API",
   "author": "Writer <dev-feedback@writer.com>",
   "types": "dist/index.d.ts",
diff --git a/scripts/lint b/scripts/lint
index 4af1de0..6ba75df 100755
--- a/scripts/lint
+++ b/scripts/lint
@@ -6,3 +6,6 @@ cd "$(dirname "$0")/.."
 
 echo "==> Running eslint"
 ESLINT_USE_FLAT_CONFIG="false" ./node_modules/.bin/eslint --ext ts,js .
+
+echo "==> Running tsc"
+./node_modules/.bin/tsc --noEmit
diff --git a/src/uploads.ts b/src/uploads.ts
index 081827c..8fd2154 100644
--- a/src/uploads.ts
+++ b/src/uploads.ts
@@ -107,21 +107,28 @@ export async function toFile(
   // If it's a promise, resolve it.
   value = await value;
 
-  // Use the file's options if there isn't one provided
-  options ??= isFileLike(value) ? { lastModified: value.lastModified, type: value.type } : {};
+  // If we've been given a `File` we don't need to do anything
+  if (isFileLike(value)) {
+    return value;
+  }
 
   if (isResponseLike(value)) {
     const blob = await value.blob();
     name ||= new URL(value.url).pathname.split(/[\\/]/).pop() ?? 'unknown_file';
 
-    return new File([blob as any], name, options);
+    // we need to convert the `Blob` into an array buffer because the `Blob` class
+    // that `node-fetch` defines is incompatible with the web standard which results
+    // in `new File` interpreting it as a string instead of binary data.
+    const data = isBlobLike(blob) ? [(await blob.arrayBuffer()) as any] : [blob];
+
+    return new File(data, name, options);
   }
 
   const bits = await getBytes(value);
 
   name ||= getName(value) ?? 'unknown_file';
 
-  if (!options.type) {
+  if (!options?.type) {
     const type = (bits[0] as any)?.type;
     if (typeof type === 'string') {
       options = { ...options, type };
diff --git a/src/version.ts b/src/version.ts
index 4e7f788..99a0031 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '0.4.0'; // x-release-please-version
+export const VERSION = '0.4.1'; // x-release-please-version
diff --git a/tests/uploads.test.ts b/tests/uploads.test.ts
index 44deabb..a623d84 100644
--- a/tests/uploads.test.ts
+++ b/tests/uploads.test.ts
@@ -54,4 +54,12 @@ describe('toFile', () => {
     const file = await toFile(input);
     expect(file.name).toEqual('uploads.test.ts');
   });
+
+  it('does not copy File objects', async () => {
+    const input = new File(['foo'], 'input.jsonl', { type: 'jsonl' });
+    const file = await toFile(input);
+    expect(file).toBe(input);
+    expect(file.name).toEqual('input.jsonl');
+    expect(file.type).toBe('jsonl');
+  });
 });
diff --git a/yarn.lock b/yarn.lock
index 358dbf2..0f17a27 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1200,12 +1200,12 @@ brace-expansion@^2.0.1:
   dependencies:
     balanced-match "^1.0.0"
 
-braces@^3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
-  integrity sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==
+braces@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.3.tgz#490332f40919452272d55a8480adc0c441358789"
+  integrity sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==
   dependencies:
-    fill-range "^7.0.1"
+    fill-range "^7.1.1"
 
 browserslist@^4.22.2:
   version "4.22.2"
@@ -1762,10 +1762,10 @@ file-entry-cache@^6.0.1:
   dependencies:
     flat-cache "^3.0.4"
 
-fill-range@^7.0.1:
-  version "7.0.1"
-  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
-  integrity sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==
+fill-range@^7.1.1:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.1.1.tgz#44265d3cac07e3ea7dc247516380643754a05292"
+  integrity sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==
   dependencies:
     to-regex-range "^5.0.1"
 
@@ -2638,11 +2638,11 @@ merge2@^1.3.0, merge2@^1.4.1:
   integrity sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==
 
 micromatch@^4.0.4:
-  version "4.0.5"
-  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-4.0.5.tgz#bc8999a7cbbf77cdc89f132f6e467051b49090c6"
-  integrity sha512-DMy+ERcEW2q8Z2Po+WNXuw3c5YaUSFjAO5GsJqfEl7UjvtIuFKO6ZrKvcItdy98dwFI2N1tg3zNIdKaQT+aNdA==
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-4.0.8.tgz#d66fa18f3a47076789320b9b1af32bd86d9fa202"
+  integrity sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA==
   dependencies:
-    braces "^3.0.2"
+    braces "^3.0.3"
     picomatch "^2.3.1"
 
 mime-db@1.51.0: