diff --git a/busybox/proguard-rules.pro b/busybox/proguard-rules.pro
deleted file mode 100644
index f1b4245..0000000
--- a/busybox/proguard-rules.pro
+++ /dev/null
@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile
diff --git a/core/proguard-rules.pro b/core/proguard-rules.pro
index 31e2667..aad74af 100644
--- a/core/proguard-rules.pro
+++ b/core/proguard-rules.pro
@@ -20,11 +20,22 @@
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
 
-# Strip out verbose logging
+# Strip out debugging stuffs
 -assumenosideeffects class com.topjohnwu.superuser.internal.Utils {
-  public static void log(...);
-  public static void ex(...);
+	public static void log(...);
+	public static void ex(...);
+}
+-assumenosideeffects class com.topjohnwu.superuser.Shell.Config {
+	public static void verboseLogging(...);
+}
+-assumevalues class com.topjohnwu.superuser.internal.Utils {
+	public static boolean vLog() return false;
+}
+-assumevalues class android.os.Debug {
+	public static boolean isDebuggerConnected() return false;
 }
 
-# Make sure R8/Proguard never remove Shell.Initializer classes
--keep,allowobfuscation class * extends com.topjohnwu.superuser.Shell$Initializer
+# Make sure R8/Proguard don't break things
+-keep,allowobfuscation class * extends com.topjohnwu.superuser.Shell$Initializer { *; }
+-keep,allowobfuscation class com.topjohnwu.superuser.ipc.IPCServer { *; }
+-keep,allowobfuscation class * extends com.topjohnwu.superuser.ipc.RootService { *; }
diff --git a/example/build.gradle.kts b/example/build.gradle.kts
index ad3e1ec..149b2ea 100644
--- a/example/build.gradle.kts
+++ b/example/build.gradle.kts
@@ -16,9 +16,10 @@ android {
 
     buildTypes {
         getByName("release") {
-            isMinifyEnabled = false
+            isMinifyEnabled = true
+            isShrinkResources = true
             proguardFiles(
-                getDefaultProguardFile("proguard-android.txt"),
+                getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
         }
diff --git a/example/proguard-rules.pro b/example/proguard-rules.pro
index f1b4245..848bc28 100644
--- a/example/proguard-rules.pro
+++ b/example/proguard-rules.pro
@@ -19,3 +19,6 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-repackageclasses
+-allowaccessmodification
diff --git a/gradle.properties b/gradle.properties
index 9e6fce1..4ef0094 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,9 +9,10 @@
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-android.enableJetifier=true
 android.useAndroidX=true
+android.enableJetifier=false
 org.gradle.jvmargs=-Xmx1536m
+android.enableR8.fullMode=true
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
diff --git a/io/proguard-rules.pro b/io/proguard-rules.pro
deleted file mode 100644
index f1b4245..0000000
--- a/io/proguard-rules.pro
+++ /dev/null
@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile
diff --git a/service/proguard-rules.pro b/service/proguard-rules.pro
deleted file mode 100644
index f1b4245..0000000
--- a/service/proguard-rules.pro
+++ /dev/null
@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile