diff --git a/app/build.gradle b/app/build.gradle
index 021f48dae..d67b927b9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -33,7 +33,7 @@ android {
             versionNameSuffix "_" + getDate()
             shrinkResources true
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
             signingConfig signingConfigs.release
         }
         debug {
diff --git a/appthemehelper/build.gradle b/appthemehelper/build.gradle
index 898a58e25..383b4637d 100644
--- a/appthemehelper/build.gradle
+++ b/appthemehelper/build.gradle
@@ -10,7 +10,7 @@ android {
     buildTypes {
         release {
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
     compileOptions {