diff --git a/app/src/main/res/xml/content_settings.xml b/app/src/main/res/xml/content_settings.xml
index 091db4664..9aefaf9bc 100644
--- a/app/src/main/res/xml/content_settings.xml
+++ b/app/src/main/res/xml/content_settings.xml
@@ -34,7 +34,7 @@
         app:useSimpleSummaryProvider="true" />
 
     <ListPreference
-        android:defaultValue="@string/default_localization_key"
+        android:defaultValue="@string/default_font_key"
         android:entries="@array/app_font_name"
         android:entryValues="@array/app_font_code"
         android:key="@string/app_font_key"
diff --git a/build.gradle b/build.gradle
index 6d19a6f8a..08b162f5d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.9.10'
+    ext.kotlin_version = '1.9.21'
     repositories {
         google()
         mavenCentral()