diff --git a/frontend/package.json b/frontend/package.json
index 10f8ce6b3..b4303e8cc 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -17,8 +17,8 @@
     "build:all": "npm run build:deps && npm run build:diagnostic-ui && npm run build:setup-wizard && npm run build:ui",
     "start:diagnostic-ui": "npm run copy-git-hash && ionic serve --project diagnostic-ui",
     "start:setup-wizard": "npm run copy-git-hash && ionic serve --project setup-wizard",
-    "start:ui": "npm run copy-git-hash && ionic serve --project ui",
-    "copy-git-hash": "./update-git-hash.sh"
+    "start:ui": "npm run-script copy-git-hash && ionic serve --project ui",
+    "copy-git-hash": "node update-git-hash.js"
   },
   "dependencies": {
     "@angular/animations": "^13.2.0",
diff --git a/frontend/update-git-hash.js b/frontend/update-git-hash.js
new file mode 100755
index 000000000..39244b65f
--- /dev/null
+++ b/frontend/update-git-hash.js
@@ -0,0 +1,27 @@
+// @ts-check
+const fs = require('fs')
+const childProcess = require('child_process')
+
+const gitHash = String(childProcess.execSync('git rev-parse HEAD')).trim()
+
+/**
+ * @template T
+ * @param {() => T} fn
+ * @param {T} defaultValue
+ * @returns
+ */
+function catchDefault(fn, defaultValue) {
+  try {
+    return fn()
+  } catch {
+    return defaultValue
+  }
+}
+
+const origConfig = catchDefault(
+  /** @returns {{gitHash?: string}} */
+  () => JSON.parse(fs.readFileSync('./config.json')),
+  {},
+)
+origConfig.gitHash = gitHash
+fs.writeFileSync('./config.json', JSON.stringify(origConfig, null, 2))
diff --git a/frontend/update-git-hash.sh b/frontend/update-git-hash.sh
deleted file mode 100755
index 0ee27313d..000000000
--- a/frontend/update-git-hash.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-
-cd "$(dirname "$0")"
-
-TMP_FILE=$(mktemp)
-
-jq ".gitHash = \"$(git rev-parse HEAD)\"" config.json > $TMP_FILE && mv $TMP_FILE config.json