diff --git a/package.json b/package.json
index b399f85..533d087 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "fs-extra": "^10.0.0",
     "getos": "^3.2.1",
     "node-fetch": "^2.6.1",
+    "rimraf": "^4.4.1",
     "semver": "^7.3.5",
     "simple-git": "^3.5.0"
   },
@@ -62,5 +63,8 @@
     "prettier": "^2.5.1",
     "ts-jest": "^29.0.0",
     "typescript": "^4.9.5"
+  },
+  "engines": {
+    "node": ">=14"
   }
 }
diff --git a/src/installer.ts b/src/installer.ts
index 7fd20a3..4e8727b 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -4,6 +4,7 @@ import semver from 'semver';
 import debug from 'debug';
 import extract from 'extract-zip';
 import { EventEmitter } from 'events';
+import { rimraf } from 'rimraf';
 import { download as electronDownload } from '@electron/get';
 import { inspect } from 'util';
 
@@ -114,7 +115,7 @@ export class Installer extends EventEmitter {
     // currently installed...
     try {
       const versionFile = path.join(this.paths.electronInstall, 'version');
-      const version = fs.readFileSync(versionFile, 'utf8');
+      const version = fs.readFileSync(versionFile, 'utf8').trim();
       this.setState(version, InstallState.installed);
     } catch {
       // no current version
@@ -141,7 +142,7 @@ export class Installer extends EventEmitter {
           );
 
           if (fs.existsSync(versionFile)) {
-            const version = fs.readFileSync(versionFile, 'utf8');
+            const version = fs.readFileSync(versionFile, 'utf8').trim();
             if (semver.valid(version)) {
               this.setState(version, InstallState.downloaded);
             }
@@ -339,27 +340,27 @@ export class Installer extends EventEmitter {
       if (installedVersion === version) {
         d(`already installed`);
       } else {
-        const { path: zipFile, alreadyExtracted } = await this.ensureDownloaded(
+        const { path: source, alreadyExtracted } = await this.ensureDownloaded(
           version,
           opts,
         );
 
         // An unzipped version already exists at `electronDownload` path
         if (alreadyExtracted) {
-          await this.installVersionImpl(version, zipFile, () => {
+          await this.installVersionImpl(version, source, () => {
             // Simply copy over the files from preinstalled version to `electronInstall`
             const { noAsar } = process;
             process.noAsar = true;
-            fs.copySync(zipFile, electronInstall);
+            fs.copySync(source, electronInstall);
             process.noAsar = noAsar;
           });
         } else {
-          await this.installVersionImpl(version, zipFile, async () => {
+          await this.installVersionImpl(version, source, async () => {
             // FIXME(anyone) is there a less awful way to wrangle asar
             const { noAsar } = process;
             try {
               process.noAsar = true;
-              await extract(zipFile, { dir: electronInstall });
+              await extract(source, { dir: electronInstall });
             } finally {
               process.noAsar = noAsar;
             }
@@ -377,7 +378,7 @@ export class Installer extends EventEmitter {
 
   private async installVersionImpl(
     version: string,
-    zipFile: string,
+    source: string,
     installCallback: () => Promise<void> | void,
   ): Promise<void> {
     const {
@@ -387,8 +388,8 @@ export class Installer extends EventEmitter {
     const d = debug(`fiddle-core:Installer:${version}:install`);
 
     this.setState(version, InstallState.installing);
-    d(`installing from "${zipFile}"`);
-    await fs.emptyDir(electronInstall);
+    d(`installing from "${source}"`);
+    await rimraf(electronInstall);
 
     // Call the user defined callback which unzips/copies files content
     if (installCallback) {
diff --git a/tests/installer.test.ts b/tests/installer.test.ts
index 4b451e1..bbfc214 100644
--- a/tests/installer.test.ts
+++ b/tests/installer.test.ts
@@ -14,7 +14,7 @@ import {
 
 describe('Installer', () => {
   let tmpdir: string;
-  let paths: Partial<Paths>;
+  let paths: Pick<Paths, 'electronDownloads' | 'electronInstall'>;
   let nockScope: Scope;
   let installer: Installer;
   const { missing, downloading, downloaded, installing, installed } =
@@ -94,9 +94,14 @@ describe('Installer', () => {
     const { events, result } = await listenWhile(installer, func);
     const exec = result as string;
 
+    const installedVersion = fs
+      .readFileSync(path.join(paths.electronInstall, 'version'), 'utf-8')
+      .trim();
+
     expect(isDownloaded).toBe(true);
     expect(installer.state(version)).toBe(installed);
     expect(installer.installedVersion).toBe(version);
+    expect(installedVersion).toBe(version);
 
     return { events, exec };
   }
@@ -127,10 +132,8 @@ describe('Installer', () => {
   }
 
   async function unZipBinary(): Promise<string> {
-    const extractDir = path.join(tmpdir, 'downloads', version);
-    fs.mkdirSync(path.join(tmpdir, 'downloads', version), {
-      recursive: true,
-    });
+    const extractDir = path.join(paths.electronDownloads, version);
+    fs.mkdirSync(extractDir, { recursive: true });
 
     await extract(fixture('electron-v13.1.7.zip'), {
       dir: extractDir,
@@ -326,15 +329,10 @@ describe('Installer', () => {
       fs.removeSync(zipFile);
       expect(installer.state(version)).toBe(downloaded);
       const { events } = await doInstall(installer, version);
-      const installedVersion = fs.readFileSync(
-        path.join(path.join(tmpdir, 'install', 'version')),
-        'utf-8',
-      );
       expect(events).toStrictEqual([
         { version: '13.1.7', state: 'installing' },
         { version: '13.1.7', state: 'installed' },
       ]);
-      expect(installedVersion).toBe(version);
     });
 
     it('throws error if already installing', async () => {
diff --git a/yarn.lock b/yarn.lock
index 67c2170..996f2e9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2841,6 +2841,16 @@ glob@^8.0.1:
     minimatch "^5.0.1"
     once "^1.3.0"
 
+glob@^9.2.0:
+  version "9.3.5"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-9.3.5.tgz#ca2ed8ca452781a3009685607fdf025a899dfe21"
+  integrity sha512-e1LleDykUz2Iu+MTYdkSsuWX8lvAjAcs0Xef0lNIu0S2wOAzuTxCJtcd9S3cijlwYF18EsU3rzb8jPVobxDh9Q==
+  dependencies:
+    fs.realpath "^1.0.0"
+    minimatch "^8.0.2"
+    minipass "^4.2.4"
+    path-scurry "^1.6.1"
+
 global-agent@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/global-agent/-/global-agent-3.0.0.tgz#ae7cd31bd3583b93c5a16437a1afe27cc33a1ab6"
@@ -3977,6 +3987,11 @@ lru-cache@^7.4.4, lru-cache@^7.5.1, lru-cache@^7.7.1:
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-7.14.0.tgz#21be64954a4680e303a09e9468f880b98a0b3c7f"
   integrity sha512-EIRtP1GrSJny0dqb50QXRUNBxHJhcpxHC++M5tD7RYbvLLn5KVWKsbyswSSqDuU15UFi3bgTQIY8nhDMeF6aDQ==
 
+lru-cache@^9.0.0:
+  version "9.1.1"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-9.1.1.tgz#c58a93de58630b688de39ad04ef02ef26f1902f1"
+  integrity sha512-65/Jky17UwSb0BuB9V+MyDpsOtXKmYwzhyl+cOa9XUiI4uV2Ouy/2voFP3+al0BjZbJgMBD8FojMpAf+Z+qn4A==
+
 make-dir@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.1.0.tgz#415e967046b3a7f1d185277d84aa58203726a13f"
@@ -4089,6 +4104,13 @@ minimatch@^5.0.1, minimatch@^5.1.0:
   dependencies:
     brace-expansion "^2.0.1"
 
+minimatch@^8.0.2:
+  version "8.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-8.0.4.tgz#847c1b25c014d4e9a7f68aaf63dedd668a626229"
+  integrity sha512-W0Wvr9HyFXZRGIDgCicunpQ299OKXs9RgZfaukz4qAW/pJhcpUfupc9c+OObPOFueNy8VSrZgEmDtk6Kh4WzDA==
+  dependencies:
+    brace-expansion "^2.0.1"
+
 minimist@^1.2.0:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.7.tgz#daa1c4d91f507390437c6a8bc01078e7000c4d18"
@@ -4148,6 +4170,16 @@ minipass@^3.0.0, minipass@^3.1.1, minipass@^3.1.6:
   dependencies:
     yallist "^4.0.0"
 
+minipass@^4.2.4:
+  version "4.2.8"
+  resolved "https://registry.yarnpkg.com/minipass/-/minipass-4.2.8.tgz#f0010f64393ecfc1d1ccb5f582bcaf45f48e1a3a"
+  integrity sha512-fNzuVyifolSLFL4NzpF+wEF4qrgqaaKX0haXPQEdQ7NKAN+WecoKMHV09YcuL/DHxrUsYQOK3MiuDf7Ip2OXfQ==
+
+minipass@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/minipass/-/minipass-5.0.0.tgz#3e9788ffb90b694a5d0ec94479a45b5d8738133d"
+  integrity sha512-3FnjYuehv9k6ovOEbyOswadCDPX1piCfhV8ncmYtHOjuPwylVWsghTLo7rabjC3Rx5xD4HDx8Wm1xnMF7S5qFQ==
+
 minizlib@^2.1.1, minizlib@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/minizlib/-/minizlib-2.1.2.tgz#e90d3466ba209b932451508a11ce3d3632145931"
@@ -4688,6 +4720,14 @@ path-parse@^1.0.6:
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.7.tgz#fbc114b60ca42b30d9daf5858e4bd68bbedb6735"
   integrity sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==
 
+path-scurry@^1.6.1:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/path-scurry/-/path-scurry-1.7.0.tgz#99c741a2cfbce782294a39994d63748b5a24f6db"
+  integrity sha512-UkZUeDjczjYRE495+9thsgcVgsaCPkaw80slmfVFgllxY+IO8ubTsOpFVjDPROBqJdHfVPUFRHPBV/WciOVfWg==
+  dependencies:
+    lru-cache "^9.0.0"
+    minipass "^5.0.0"
+
 path-type@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-3.0.0.tgz#cef31dc8e0a1a3bb0d105c0cd97cf3bf47f4e36f"
@@ -5031,6 +5071,13 @@ rimraf@^3.0.0, rimraf@^3.0.2:
   dependencies:
     glob "^7.1.3"
 
+rimraf@^4.4.1:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-4.4.1.tgz#bd33364f67021c5b79e93d7f4fa0568c7c21b755"
+  integrity sha512-Gk8NlF062+T9CqNGn6h4tls3k6T1+/nXdOcSZVikNVtlRdYpA7wRJJMoXmuvOnLW844rPjdQ7JgXCYM6PPC/og==
+  dependencies:
+    glob "^9.2.0"
+
 roarr@^2.15.3:
   version "2.15.4"
   resolved "https://registry.yarnpkg.com/roarr/-/roarr-2.15.4.tgz#f5fe795b7b838ccfe35dc608e0282b9eba2e7afd"