diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 7da9a3da3..7427e9167 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Calendar</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 3ca273096..ccb958383 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Einfacher Kalender</string>
     <string name="app_launcher_name">Kalender</string>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 796c12a2c..dae767006 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Simple Calendar</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index cfadbb5fc..31f1992a3 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Calendrier</string>
diff --git a/app/src/main/res/values-hi-rIN/strings.xml b/app/src/main/res/values-hi-rIN/strings.xml
index ab3ce9dd7..1f53179d8 100644
--- a/app/src/main/res/values-hi-rIN/strings.xml
+++ b/app/src/main/res/values-hi-rIN/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">सरल कैलेंडर</string>
     <string name="app_launcher_name">कैलेंडर</string>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index 96085ce44..72a439079 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Egyszerű naptár</string>
     <string name="app_launcher_name">Naptár</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 382c2ef77..800963009 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Calendario</string>
diff --git a/app/src/main/res/values-iw/strings.xml b/app/src/main/res/values-iw/strings.xml
index 8a08fff77..4f5085e12 100644
--- a/app/src/main/res/values-iw/strings.xml
+++ b/app/src/main/res/values-iw/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">לוח שנה פשוט</string>
     <string name="app_launcher_name">לוח שנה</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 748c8be12..5741620ff 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -1,4 +1,5 @@
-<resources>
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
     <string name="app_name">シンプル カレンダー</string>
     <string name="app_launcher_name">カレンダー</string>
     <string name="change_view">ビューの変更</string>
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index 93aae5b9e..bb598ec7d 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -1,4 +1,5 @@
-<resources>
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
     <string name="app_name">심플 캘린더</string>
     <string name="app_launcher_name">캘린더</string>
     <string name="change_view">보기 변경</string>
diff --git a/app/src/main/res/values-land/dimens.xml b/app/src/main/res/values-land/dimens.xml
index 01fe53547..556dfb68a 100644
--- a/app/src/main/res/values-land/dimens.xml
+++ b/app/src/main/res/values-land/dimens.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <dimen name="yearly_month_padding">40dp</dimen>
 </resources>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 353b8c475..941650d01 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Simple Calendar</string>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 738673331..c88ff2604 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Calendário</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index e522c27a6..8880545c3 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Calendário</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 2e57ae908..01e96dcc3 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Календарь</string>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index f887b149f..251b23db5 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Jednoduchý kalendár</string>
     <string name="app_launcher_name">Kalendár</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index 4c2489c79..f4fd316ce 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Kalender</string>
diff --git a/app/src/main/res/values-sw600dp/dimens.xml b/app/src/main/res/values-sw600dp/dimens.xml
index 25715c61a..eb84835a6 100644
--- a/app/src/main/res/values-sw600dp/dimens.xml
+++ b/app/src/main/res/values-sw600dp/dimens.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <dimen name="min_widget_width">320dp</dimen>
     <dimen name="min_widget_height">320dp</dimen>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index 3812310b5..c7731397b 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Basit Takvim</string>
     <string name="app_launcher_name">Takvim</string>
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
index 33cef7a62..88dcfd806 100644
--- a/app/src/main/res/values-v21/styles.xml
+++ b/app/src/main/res/values-v21/styles.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
 
     <style name="ArrowStyle">
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 4f84b5cff..06ce8c148 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <dimen name="yearly_padding_side">10dp</dimen>
     <dimen name="yearly_padding_half">3dp</dimen>
diff --git a/app/src/main/res/values/donottranslate.xml b/app/src/main/res/values/donottranslate.xml
index d73f02dc6..a150d71b5 100644
--- a/app/src/main/res/values/donottranslate.xml
+++ b/app/src/main/res/values/donottranslate.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
 
     <!-- Release notes -->
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 6d6db5fb8..f1a291468 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Simple Calendar</string>
     <string name="app_launcher_name">Calendar</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 3d7da088b..987325f52 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
 
     <style name="AppTheme" parent="AppTheme.Base"/>