diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 9bb4db1..0a190c5 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -15,8 +15,8 @@ android {
         applicationId = "de.timklge.karoopowerbar"
         minSdk = 26
         targetSdk = 33
-        versionCode = 12
-        versionName = "1.3.3"
+        versionCode = 13
+        versionName = "1.3.4"
     }
 
     signingConfigs {
@@ -38,7 +38,7 @@ android {
         }
         release {
             signingConfig = signingConfigs.getByName("release")
-            // isMinifyEnabled = false
+            isMinifyEnabled = true
             proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
         }
     }
diff --git a/app/manifest.json b/app/manifest.json
index 552af9c..1e9a13b 100644
--- a/app/manifest.json
+++ b/app/manifest.json
@@ -3,9 +3,9 @@
   "packageName": "de.timklge.karoopowerbar",
   "iconUrl": "https://github.com/timklge/karoo-powerbar/releases/latest/download/karoo-powerbar.png",
   "latestApkUrl": "https://github.com/timklge/karoo-powerbar/releases/latest/download/app-release.apk",
-  "latestVersion": "1.3.3",
-  "latestVersionCode": 12,
+  "latestVersion": "1.3.4",
+  "latestVersionCode": 13,
   "developer": "timklge",
   "description": "Adds a colored power bar to the bottom of the screen",
-  "releaseNotes": "Adds option to set a custom range for power and heart rate bar"
+  "releaseNotes": "Adds option to set a custom range for power and heart rate bar. Optimize build."
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/de/timklge/karoopowerbar/KarooPowerbarExtension.kt b/app/src/main/kotlin/de/timklge/karoopowerbar/KarooPowerbarExtension.kt
index 912d08a..5791376 100644
--- a/app/src/main/kotlin/de/timklge/karoopowerbar/KarooPowerbarExtension.kt
+++ b/app/src/main/kotlin/de/timklge/karoopowerbar/KarooPowerbarExtension.kt
@@ -10,7 +10,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 
-class KarooPowerbarExtension : KarooExtension("karoo-powerbar", "1.3.3") {
+class KarooPowerbarExtension : KarooExtension("karoo-powerbar", "1.3.4") {
 
     companion object {
         const val TAG = "karoo-powerbar"