diff --git a/lib/config.js b/lib/config.js
index a1b8c09..67bcf15 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -2,7 +2,7 @@
 import convict from 'convict';
 import yaml from 'js-yaml';
 import pino from 'pino';
-import path, { join } from 'path';
+import path from 'path';
 import fs from 'fs';
 import os from 'os';
 
@@ -10,7 +10,7 @@ const CWD = process.cwd();
 
 let pack = {};
 try {
-    pack = JSON.parse(fs.readFileSync(join(CWD, 'package.json'), 'utf-8'));
+    pack = JSON.parse(fs.readFileSync(path.join(CWD, 'package.json'), 'utf-8'));
 } catch (error) {
     /* empty */
 }
@@ -148,7 +148,7 @@ const conf = convict({
         path: {
             doc: 'Absolute path to store files in when using the "fs" sink',
             format: String,
-            default: path.join(os.tmpdir(), '/eik'),
+            default: path.join(os.tmpdir(), 'eik'),
             env: 'SINK_PATH',
         },
     },
@@ -163,7 +163,7 @@ const logger = pino({
 });
 
 try {
-    conf.loadFile(path.join(CWD, `/config/${env}.yaml`));
+    conf.loadFile(path.join(CWD, 'config', `${env}.yaml`));
 } catch (error) {
     logger.error(error);
 }
diff --git a/lib/utils.js b/lib/utils.js
index 00ea6ca..e9d9824 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,15 +1,19 @@
 import path from 'path';
 
+function doJoin(a, b) {
+    return path.join(a, b).replace(/\\/g, '/');
+}
+
 const sanitizeExtras = (extras, version) => {
     if (version && extras) {
-        return path.join(version, extras);
+        return doJoin(version, extras);
     }
     return extras || '';
 };
 
 const sanitizeName = (scope, name) => {
     if (scope && name) {
-        return path.join(scope, name);
+        return doJoin(scope, name);
     }
     return scope || '';
 };
diff --git a/package.json b/package.json
index 7868e07..208cf9d 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "@eik/core": "1.4.0",
     "@eik/sink": "1.2.5",
     "@eik/sink-file-system": "1.0.1",
-    "@eik/sink-memory": "1.1.1",
+    "@eik/sink-memory": "1.1.2",
     "@fastify/compress": "6.5.0",
     "@fastify/cors": "8.5.0",
     "@fastify/jwt": "7.2.4",
diff --git a/test/img.test.js b/test/img.test.js
index ac96fbb..85ff713 100644
--- a/test/img.test.js
+++ b/test/img.test.js
@@ -1,17 +1,17 @@
 import FormData from 'form-data';
 import Fastify from 'fastify';
 import fetch from 'node-fetch';
-import path from 'path';
+import path from 'node:path';
 import tap from 'tap';
-import url from 'url';
-import fs from 'fs';
+import url from 'node:url';
+import fs from 'node:fs';
 
 import Sink from '@eik/core/lib/sinks/test.js';
 import Server from '../lib/main.js';
 
 const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
 
-const FIXTURE_PKG = path.resolve(__dirname, '../fixtures/archive.tgz');
+const FIXTURE_PKG = path.resolve(__dirname, '..', 'fixtures', 'archive.tgz');
 
 // Ignore the timestamp for "created" field in the snapshots
 tap.cleanSnapshot = (s) => {
diff --git a/test/map.test.js b/test/map.test.js
index 195837b..cfba059 100644
--- a/test/map.test.js
+++ b/test/map.test.js
@@ -1,17 +1,22 @@
 import FormData from 'form-data';
 import Fastify from 'fastify';
 import fetch from 'node-fetch';
-import path from 'path';
+import path from 'node:path';
 import tap from 'tap';
-import url from 'url';
-import fs from 'fs';
+import url from 'node:url';
+import fs from 'node:fs';
 
 import Sink from '@eik/core/lib/sinks/test.js';
 import Server from '../lib/main.js';
 
 const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
 
-const FIXTURE_MAP = path.resolve(__dirname, '../fixtures/import-map.json');
+const FIXTURE_MAP = path.resolve(
+    __dirname,
+    '..',
+    'fixtures',
+    'import-map.json',
+);
 
 tap.beforeEach(async (t) => {
     const sink = new Sink();
diff --git a/test/npm.test.js b/test/npm.test.js
index e42b0d0..4440bff 100644
--- a/test/npm.test.js
+++ b/test/npm.test.js
@@ -1,17 +1,17 @@
 import FormData from 'form-data';
 import Fastify from 'fastify';
 import fetch from 'node-fetch';
-import path from 'path';
+import path from 'node:path';
 import tap from 'tap';
-import url from 'url';
-import fs from 'fs';
+import url from 'node:url';
+import fs from 'node:fs';
 
 import Sink from '@eik/core/lib/sinks/test.js';
 import Server from '../lib/main.js';
 
 const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
 
-const FIXTURE_PKG = path.resolve(__dirname, '../fixtures/archive.tgz');
+const FIXTURE_PKG = path.resolve(__dirname, '..', 'fixtures', 'archive.tgz');
 
 // Ignore the timestamp for "created" field in the snapshots
 tap.cleanSnapshot = (s) => {
diff --git a/test/pkg.test.js b/test/pkg.test.js
index be27420..ace489e 100644
--- a/test/pkg.test.js
+++ b/test/pkg.test.js
@@ -1,17 +1,17 @@
 import FormData from 'form-data';
 import Fastify from 'fastify';
 import fetch from 'node-fetch';
-import path from 'path';
+import path from 'node:path';
 import tap from 'tap';
-import url from 'url';
-import fs from 'fs';
+import url from 'node:url';
+import fs from 'node:fs';
 
 import Sink from '@eik/core/lib/sinks/test.js';
 import Server from '../lib/main.js';
 
 const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
 
-const FIXTURE_PKG = path.resolve(__dirname, '../fixtures/archive.tgz');
+const FIXTURE_PKG = path.resolve(__dirname, '..', 'fixtures', 'archive.tgz');
 
 // Ignore the timestamp for "created" field in the snapshots
 tap.cleanSnapshot = (s) => {