diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 24662a2a..7c086ec0 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -41,13 +41,10 @@ android {
         }
 
         getByName("release") {
-            isMinifyEnabled = false
+            isMinifyEnabled = true
             isShrinkResources = false
 
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
+            proguardFiles("proguard-rules.pro")
         }
     }
     compileOptions {
@@ -144,7 +141,6 @@ dependencies {
         exclude("org.slf4j")
         exclude("xmlpull")
     }
-    implementation("org.slf4j:slf4j-android:1.7.36")
     implementation("org.jsoup:jsoup:1.18.1")
 
     // Fb2 parser
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index b9504bba..c0af59e0 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,5 +1,5 @@
 # Proguard-rules
--dontwarn org.xmlpull.v1.**
+-dontwarn android.content.res.**
 -dontwarn com.gemalto.jp2.JP2Decoder
 -dontwarn com.google.auto.service.AutoService
 -dontwarn javax.lang.model.SourceVersion
@@ -31,11 +31,10 @@
 -dontwarn javax.lang.model.util.SimpleTypeVisitor8
 -dontwarn javax.lang.model.util.Types
 -dontwarn javax.tools.Diagnostic$Kind
--dontwarn org.kxml2.io.**
+-dontwarn org.kxml2.io.KXml**
+-dontwarn org.slf4j.Logger
+-dontwarn org.slf4j.LoggerFactory
+-dontwarn org.xmlpull.v1.XmlPullParserFactory
 
--keep class com.mikepenz.aboutlibraries.** { *; }
--keep class org.xmlpull.** { *; }
--keepclassmembers class org.xmlpull.** { *; }
-
-# Debug rule
-#-keepnames class ** { *; }
+# Keeping names of classes that produce undeterministic results
+-keepnames class **
\ No newline at end of file