diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..3f2eb16
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,5 @@
+# Agent Instructions
+
+## Versioning
+
+Don't change the `version` in `package.json` in a PR that makes other changes. Version bumps go in their own separate PR.
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 120000
index 0000000..47dc3e3
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1 @@
+AGENTS.md
\ No newline at end of file
diff --git a/package.json b/package.json
index 0da7b31..0048b8d 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "adm-zip": "^0.5.2",
-    "axios": "1.15.0",
+    "axios": "1.20.0",
     "chalk": "^4.1.0",
     "form-data": "^3.0.0",
     "glob": "^7.1.6",
diff --git a/src/sourcemaps/signed-url-uploader.js b/src/sourcemaps/signed-url-uploader.js
index 6113587..dd047d0 100644
--- a/src/sourcemaps/signed-url-uploader.js
+++ b/src/sourcemaps/signed-url-uploader.js
@@ -63,6 +63,10 @@ class SignedUrlUploader {
         headers: {
           'Content-Type': 'application/octet-stream',
         },
+        // maxBodyLength: don't cap the upload size client side; the signed URL
+        // decides what it accepts. maxContentLength (response size) matches RollbarAPI.
+        maxContentLength: Infinity,
+        maxBodyLength: Infinity,
       });
       if (resp.status === 200) {
         output.status('Success', 'Uploaded zip file successfully');
diff --git a/test/sourcemaps/signed-url-uploader.test.js b/test/sourcemaps/signed-url-uploader.test.js
index 7ab8f84..3278303 100644
--- a/test/sourcemaps/signed-url-uploader.test.js
+++ b/test/sourcemaps/signed-url-uploader.test.js
@@ -5,6 +5,7 @@
 const expect = require('chai').expect;
 const sinon = require('sinon');
 const axios = require('axios')
+const http = require('http');
 
 const SignedUrlUploader = require('../../src/sourcemaps/signed-url-uploader');
 const Scanner = require('../../src/sourcemaps/scanner');
@@ -68,7 +69,35 @@ describe('.upload()', function() {
       statusText: 'Success',
     });
 
-    await signedUrlUploader.upload(false, files);
-    expect(stub.callCount).to.equal(1);
+    try {
+      await signedUrlUploader.upload(false, files);
+      expect(stub.callCount).to.equal(1);
+    } finally {
+      stub.restore();
+    }
+  });
+
+  it('should upload zips larger than 10 MB', async function() {
+    let received = 0;
+    const server = http.createServer((req, res) => {
+      req.on('data', (chunk) => { received += chunk.length; });
+      req.on('end', () => { res.writeHead(200); res.end(); });
+    });
+    await new Promise((resolve) => server.listen(0, '127.0.0.1', resolve));
+
+    const size = 11 * 1024 * 1024;
+    const signedUrlUploader = new SignedUrlUploader();
+    signedUrlUploader.zipFiles = function() { this.zipBuffer = Buffer.alloc(size); };
+    const spy = sinon.spy(axios, 'put');
+
+    try {
+      await signedUrlUploader.upload(false, [], `http://127.0.0.1:${server.address().port}/`);
+    } finally {
+      spy.restore();
+      server.close();
+    }
+
+    expect(spy.firstCall.args[2].maxBodyLength).to.equal(Infinity);
+    expect(received).to.equal(size);
   });
 });