diff --git a/apdfjs-lib/build.gradle b/apdfjs-lib/build.gradle
index 61e196e..dc69cb6 100644
--- a/apdfjs-lib/build.gradle
+++ b/apdfjs-lib/build.gradle
@@ -9,6 +9,7 @@ android {
         targetSdkVersion 25
         versionCode 1
         versionName "1.0"
+        consumerProguardFiles 'proguard-rules.pro'
     }
     buildTypes {
         release {