diff --git a/.gitmodules b/.gitmodules
index a3cf52fbe..d12399641 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,7 +6,7 @@
 [submodule "project/jni/application/openttd/src"]
 	path = project/jni/application/openttd/src
 	url = https://github.com/n-ice-community/openttd-android.git
-	branch = 12
+	branch = 13
 [submodule "project/jni/sdl2"]
 	path = project/jni/sdl2
 	url = https://github.com/libsdl-org/SDL.git
diff --git a/project/jni/application/openttd/AndroidAppSettings.cfg b/project/jni/application/openttd/AndroidAppSettings.cfg
index 28370b1c2..7e0f621fc 100644
--- a/project/jni/application/openttd/AndroidAppSettings.cfg
+++ b/project/jni/application/openttd/AndroidAppSettings.cfg
@@ -7,10 +7,10 @@ AppName="OpenTTD"
 AppFullName=org.openttd.sdl
 
 # Application version code (integer)
-AppVersionCode=1300114
+AppVersionCode=1340120
 
 # Application user-visible version name (string)
-AppVersionName="13.0.rev114"
+AppVersionName="13.4.rev120"
 
 # Specify path to download application data in zip archive in the form "Description|URL|MirrorURL^Description2|URL2|MirrorURL2^...'
 # If you'll start Description with '!' symbol it will be enabled by default, '!!' will also hide the entry from the menu, so it cannot be disabled
@@ -22,7 +22,7 @@ AppVersionName="13.0.rev114"
 # The mount directory will be returned by calling getenv("ANDROID_OBB_MOUNT_DIR")
 # You can use .zip.xz archives for better compression, but you need to add 'lzma' to CompiledLibraries
 # Generate .zip.xz files like this: zip -0 -r data.zip your-data/* ; xz -8 data.zip
-AppDataDownloadUrl="!!Data files|openttd-data-13.0-0.zip.xz^!!Config file|:.openttd/openttd.cfg:openttd-1.4.0.30.cfg^!!!!MIDI music support|timidity.zip.xz^!!Internationalization files|icudt62l.zip.xz^!!Fonts|openttd-fonts.zip.xz"
+AppDataDownloadUrl="!!Data files|openttd-data-13.4-0.zip.xz^!!Config file|:.openttd/openttd.cfg:openttd-1.4.0.30.cfg^!!!!MIDI music support|timidity.zip.xz^!!Internationalization files|icudt62l.zip.xz^!!Fonts|openttd-fonts.zip.xz"
 
 # Reset SDL config when updating application to the new version (y) / (n)
 ResetSdlConfigForThisVersion=y
diff --git a/project/jni/application/openttd/pack-data.sh b/project/jni/application/openttd/pack-data.sh
index 620a15210..a8093d637 100755
--- a/project/jni/application/openttd/pack-data.sh
+++ b/project/jni/application/openttd/pack-data.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-VER=13.0-0
+VER=13.4-0
 ARCH=$1
 ANDROID_DATA_FULLPATH=$(realpath ./AndroidData/)
 
diff --git a/project/jni/application/openttd/src b/project/jni/application/openttd/src
index 6215c0dd2..606be85f9 160000
--- a/project/jni/application/openttd/src
+++ b/project/jni/application/openttd/src
@@ -1 +1 @@
-Subproject commit 6215c0dd2d9bccb07f19bc83d8efd7a8f9b811d4
+Subproject commit 606be85f941266c8d371edc4e74d8e7c89eafb18