diff --git a/app/build.gradle b/app/build.gradle
index 945851f8b..46c3ddf7e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -42,7 +42,7 @@ ext {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:3.4.12'
+    implementation 'com.simplemobiletools:commons:3.5.4'
     implementation 'joda-time:joda-time:2.9.9'
     implementation 'com.facebook.stetho:stetho:1.5.0'
     implementation 'com.android.support:multidex:1.0.2'
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 31a130621..ad7d60487 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,7 +1 @@
 -keep class com.simplemobiletools.calendar.models.** { *; }
-
-# Joda
--dontwarn org.joda.convert.**
--dontwarn org.joda.time.**
--keep class org.joda.time.** { *; }
--keep interface org.joda.time.** { *; }
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/adapters/DayEventsAdapter.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/adapters/DayEventsAdapter.kt
index e8480eacd..206e6da7a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/adapters/DayEventsAdapter.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/adapters/DayEventsAdapter.kt
@@ -107,8 +107,7 @@ class DayEventsAdapter(activity: SimpleActivity, val events: ArrayList<Event>, v
         DeleteEventDialog(activity, eventIds) {
             val eventsToDelete = ArrayList<Event>(selectedPositions.size)
             selectedPositions.sortedDescending().forEach {
-                val event = events[it]
-                eventsToDelete.add(event)
+                eventsToDelete.add(events[it])
             }
             events.removeAll(eventsToDelete)