diff --git a/CHANGELOG.md b/CHANGELOG.md
index 52cafc8..9c24e0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,10 @@ Section Order:
 ### Security
 -->
 
+### Fixed
+
+- JS variable declaration in the template. (`const` instead of `let`)
+
 ## [2.2.2] - 2024-12-14
 
 ### Added
diff --git a/timezones/templates/timezones/index.html b/timezones/templates/timezones/index.html
index a7dd5a1..4ab28b0 100644
--- a/timezones/templates/timezones/index.html
+++ b/timezones/templates/timezones/index.html
@@ -66,7 +66,7 @@
 
     <!-- share options with JS part -->
     <script>
-        let aaTimezonesOptions = {
+        const aaTimezonesOptions = {
             base_url: '{% url "timezones:index" %}',
             timestamp: '{{ timestamp }}',
             translation: {