diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 0ac630a..042f39f 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -29,8 +29,8 @@ android {
 
     buildTypes {
         release {
-            isMinifyEnabled = false
-            isShrinkResources = false
+            isMinifyEnabled = true
+            isShrinkResources = true
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 3c04e7d..c872c8b 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -12,6 +12,11 @@
 #   public *;
 #}
 
+# Keep DataStore fields
+-keepclassmembers class * extends com.google.protobuf.GeneratedMessageLite* {
+   <fields>;
+}
+
 # Uncomment this to preserve the line number information for
 # debugging stack traces.
 #-keepattributes SourceFile,LineNumberTable