diff --git a/CHANGELOG.md b/CHANGELOG.md
index f8294223d88449e159c1cecaadd385585a2fe38e..9da1fec84bf42358dad7e9203e4ef3d174b61414 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+### Version 2.9.13
+
+* minor A/V improvements
+
 ### Version 2.9.12
 
 * Always verify domain name. No user overwrite
diff --git a/build.gradle b/build.gradle
index c06f5e34cdad1b6a810e9a35c6e3938be33aa048..f30385970a8ac0be596ea8e97fd14375f6d4af32 100644
--- a/build.gradle
+++ b/build.gradle
@@ -93,8 +93,8 @@ android {
     defaultConfig {
         minSdkVersion 21
         targetSdkVersion 29
-        versionCode 42014
-        versionName "2.9.12"
+        versionCode 42015
+        versionName "2.9.13"
         archivesBaseName += "-$versionName"
         applicationId "eu.siacs.conversations"
         resValue "string", "applicationId", applicationId
diff --git a/fastlane/metadata/android/en-US/changelogs/42015.txt b/fastlane/metadata/android/en-US/changelogs/42015.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1d478b5a04801e3b76d06bd9c206ae139c5e95b6
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/42015.txt
@@ -0,0 +1 @@
+* minor A/V improvements 
diff --git a/src/main/res/values-vi/strings.xml b/src/main/res/values-vi/strings.xml
index 451971c9073e344e935d33cd57ab438cc55ff1b0..deebac8f8a79ac086533ee8e1b510ec38bbebc71 100644
--- a/src/main/res/values-vi/strings.xml
+++ b/src/main/res/values-vi/strings.xml
@@ -1,4 +1,4 @@
-\<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="action_settings">Cài đặt</string>
     <string name="action_add">Cuộc hội thoại mới</string>