diff --git a/app/build.gradle b/app/build.gradle
index 0b8b83f..fe9351c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -20,7 +20,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 481bb43..aa1e594 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -18,4 +18,12 @@
 
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
\ No newline at end of file
+#-renamesourcefileattribute SourceFile
+
+# OkHttp rules
+-keep,allowobfuscation,allowshrinking class okhttp3.**
+-keep,allowobfuscation,allowshrinking class okio.**
+-dontwarn org.conscrypt.**
+
+# Keep models (data classes)
+-keep class com.anabasis.vkchatmanager.models.** { *; }