diff --git a/package.json b/package.json
index e679712..7fad0fb 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "node-fetch-cache",
   "version": "2.0.3",
   "description": "node-fetch with a persistent cache.",
-  "main": "index.js",
+  "main": "src/index.js",
   "type": "module",
   "scripts": {
     "test": "mocha --timeout 10000 --exit",
diff --git a/classes/caching/file_system_cache.js b/src/classes/caching/file_system_cache.js
similarity index 100%
rename from classes/caching/file_system_cache.js
rename to src/classes/caching/file_system_cache.js
diff --git a/classes/caching/key_timeout.js b/src/classes/caching/key_timeout.js
similarity index 100%
rename from classes/caching/key_timeout.js
rename to src/classes/caching/key_timeout.js
diff --git a/classes/caching/memory_cache.js b/src/classes/caching/memory_cache.js
similarity index 100%
rename from classes/caching/memory_cache.js
rename to src/classes/caching/memory_cache.js
diff --git a/classes/headers.js b/src/classes/headers.js
similarity index 100%
rename from classes/headers.js
rename to src/classes/headers.js
diff --git a/classes/response.js b/src/classes/response.js
similarity index 100%
rename from classes/response.js
rename to src/classes/response.js
diff --git a/index.js b/src/index.js
similarity index 100%
rename from index.js
rename to src/index.js
diff --git a/test/tests.js b/test/tests.js
index 9293ad5..747d7b1 100644
--- a/test/tests.js
+++ b/test/tests.js
@@ -7,7 +7,7 @@ import rimraf from 'rimraf';
 import path from 'path';
 import { URLSearchParams } from 'url';
 import standardFetch from 'node-fetch';
-import FetchCache, { MemoryCache, FileSystemCache } from '../index.js';
+import FetchCache, { MemoryCache, FileSystemCache } from '../src/index.js';
 import { Agent } from 'http';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
@@ -260,7 +260,7 @@ describe('Cache tests', function() {
 
   it('Gives different read streams different cache keys', async function() {
     const s1 = fs.createReadStream(path.join(__dirname, 'expected_png.png'));
-    const s2 = fs.createReadStream(path.join(__dirname, '..', 'index.js'));
+    const s2 = fs.createReadStream(path.join(__dirname, '..', 'src', 'index.js'));
 
     res = await cachedFetch(TWO_HUNDRED_URL, post(s1));
     assert.strictEqual(res.fromCache, false);