diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index babd82591..f46105641 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -65,7 +65,9 @@
 -keep class org.mozilla.javascript.* { *; }
 -keep class org.mozilla.javascript.** { *; }
 -keep class org.mozilla.javascript.engine.** { *; }
+-keep class org.mozilla.classfile.ClassFileWriter
 -keep class org.schabi.newpipe.extractor.timeago.patterns.** { *; }
+-keep class org.schabi.newpipe.extractor.services.youtube.protos.** { *; }
 -dontwarn org.mozilla.javascript.JavaToJSONConverters
 -dontwarn org.mozilla.javascript.tools.**
 -dontwarn javax.script.**