diff --git a/build.gradle b/build.gradle
index 7f811dce07..39c010359e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -317,7 +317,7 @@ dependencies {
     implementation "androidx.preference:preference-ktx:1.2.0"
 
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
-    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.4.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0-RC'
     implementation 'com.github.ChickenHook:RestrictionBypass:2.2'
     implementation 'dev.rikka.tools.refine:runtime:4.1.0'
 
diff --git a/proguard.pro b/proguard.pro
index 4d4642e9fe..d646e15504 100644
--- a/proguard.pro
+++ b/proguard.pro
@@ -104,43 +104,3 @@
 -keep class com.android.** {
   *;
 }
-
-# Keep `Companion` object fields of serializable classes.
-# This avoids serializer lookup through `getDeclaredClasses` as done for named companion objects.
--if @kotlinx.serialization.Serializable class **
--keepclassmembers class <1> {
-    static <1>$Companion Companion;
-}
-
-# Keep `serializer()` on companion objects (both default and named) of serializable classes.
--if @kotlinx.serialization.Serializable class ** {
-    static **$* *;
-}
--keepclassmembers class <2>$<3> {
-    kotlinx.serialization.KSerializer serializer(...);
-}
-
-# Keep `INSTANCE.serializer()` of serializable objects.
--if @kotlinx.serialization.Serializable class ** {
-    public static ** INSTANCE;
-}
--keepclassmembers class <1> {
-    public static <1> INSTANCE;
-    kotlinx.serialization.KSerializer serializer(...);
-}
-
-# @Serializable and @Polymorphic are used at runtime for polymorphic serialization.
--keepattributes RuntimeVisibleAnnotations,AnnotationDefault
-
-# Serializer for classes with named companion objects are retrieved using `getDeclaredClasses`.
-# If you have any, uncomment and replace classes with those containing named companion objects.
-#-keepattributes InnerClasses # Needed for `getDeclaredClasses`.
-#-if @kotlinx.serialization.Serializable class
-#com.example.myapplication.HasNamedCompanion, # <-- List serializable classes with named companions.
-#com.example.myapplication.HasNamedCompanion2
-#{
-#    static **$* *;
-#}
-#-keepnames class <1>$$serializer { # -keepnames suffices; class is kept when serializer() is kept.
-#    static <1>$$serializer INSTANCE;
-#}