diff --git a/haptics/android/build.gradle b/haptics/android/build.gradle
index 9525b75ec..360ca13cd 100644
--- a/haptics/android/build.gradle
+++ b/haptics/android/build.gradle
@@ -42,7 +42,7 @@ android {
     buildTypes {
         release {
             minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
     lintOptions {
diff --git a/keyboard/android/build.gradle b/keyboard/android/build.gradle
index 889d1cb96..47c4b9c24 100644
--- a/keyboard/android/build.gradle
+++ b/keyboard/android/build.gradle
@@ -42,7 +42,7 @@ android {
     buildTypes {
         release {
             minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
     lintOptions {