diff --git a/app/build.gradle b/app/build.gradle
index b823d54a..a51c7b78 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -56,7 +56,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:5.25.21'
+    implementation 'com.simplemobiletools:commons:5.26.4'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta4'
     implementation 'org.greenrobot:eventbus:3.2.0'
     implementation 'com.klinkerapps:android-smsmms:5.2.6'
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index f1b42451..e6c59860 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,21 +1,6 @@
-# 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
+# EventBus
+-keepattributes *Annotation*
+-keepclassmembers class ** {
+    @org.greenrobot.eventbus.Subscribe <methods>;
+}
+-keep enum org.greenrobot.eventbus.ThreadMode { *; }
diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
index e6572c9e..f5a03c70 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
@@ -29,6 +29,7 @@ import com.klinker.android.send_message.Transaction
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.ensureBackgroundThread
+import com.simplemobiletools.commons.helpers.isNougatPlus
 import com.simplemobiletools.smsmessenger.R
 import com.simplemobiletools.smsmessenger.adapters.AutoCompleteTextViewAdapter
 import com.simplemobiletools.smsmessenger.adapters.ThreadAdapter
@@ -146,6 +147,7 @@ class ThreadActivity : SimpleActivity() {
         menuInflater.inflate(R.menu.menu_thread, menu)
         menu.apply {
             findItem(R.id.delete).isVisible = threadItems.isNotEmpty()
+            findItem(R.id.block_number).isVisible = isNougatPlus()
         }
 
         return true
diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt
index 988b70ef..4cae6460 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt
@@ -619,6 +619,10 @@ fun Context.getThreadId(addresses: Set<String>): Long {
 }
 
 fun Context.isNumberBlocked(number: String): Boolean {
+    if (!isNougatPlus()) {
+        return false
+    }
+
     val blockedNumbers = getBlockedNumbers()
     val numberToCompare = number.trimToComparableNumber()
     return blockedNumbers.map { it.numberToCompare }.contains(numberToCompare) || blockedNumbers.map { it.number }.contains(numberToCompare)