diff --git a/Demo/Objective_C_Demo/Resources/Info.plist b/Demo/Objective_C_Demo/Resources/Info.plist
index e618639e..51a26a70 100755
--- a/Demo/Objective_C_Demo/Resources/Info.plist
+++ b/Demo/Objective_C_Demo/Resources/Info.plist
@@ -21,7 +21,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>6.0.5</string>
+	<string>6.0.6</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>UILaunchStoryboardName</key>
diff --git a/Demo/Swift_Demo/Resources/Info.plist b/Demo/Swift_Demo/Resources/Info.plist
index de9be308..13c32b47 100644
--- a/Demo/Swift_Demo/Resources/Info.plist
+++ b/Demo/Swift_Demo/Resources/Info.plist
@@ -21,7 +21,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>6.0.5</string>
+	<string>6.0.6</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>UILaunchStoryboardName</key>
diff --git a/IQKeyboardManager.podspec.json b/IQKeyboardManager.podspec.json
index ca8afdd2..c9c540d9 100644
--- a/IQKeyboardManager.podspec.json
+++ b/IQKeyboardManager.podspec.json
@@ -1,9 +1,9 @@
 {
   "name": "IQKeyboardManager",
-  "version": "6.0.5",
+  "version": "6.0.6",
   "source": {
     "git": "https://github.com/hackiftekhar/IQKeyboardManager.git",
-    "tag": "v6.0.5"
+    "tag": "v6.0.6"
   },
   "summary": "Codeless drop-in universal library allows to prevent issues of keyboard sliding up and cover UITextField/UITextView.",
   "homepage": "https://github.com/hackiftekhar/IQKeyboardManager",
diff --git a/IQKeyboardManager.xcodeproj/project.xcworkspace/xcuserdata/iemacbook01.xcuserdatad/UserInterfaceState.xcuserstate b/IQKeyboardManager.xcodeproj/project.xcworkspace/xcuserdata/iemacbook01.xcuserdatad/UserInterfaceState.xcuserstate
index 456826e2..a010ebf3 100644
Binary files a/IQKeyboardManager.xcodeproj/project.xcworkspace/xcuserdata/iemacbook01.xcuserdatad/UserInterfaceState.xcuserstate and b/IQKeyboardManager.xcodeproj/project.xcworkspace/xcuserdata/iemacbook01.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/IQKeyboardManager/Categories/IQNSArray+Sort.h b/IQKeyboardManager/Categories/IQNSArray+Sort.h
index 46191ee9..e3486514 100644
--- a/IQKeyboardManager/Categories/IQNSArray+Sort.h
+++ b/IQKeyboardManager/Categories/IQNSArray+Sort.h
@@ -23,6 +23,8 @@
 
 #import <Foundation/NSArray.h>
 
+@class UIView;
+
 /**
  UIView.subviews sorting category.
  */
@@ -35,11 +37,11 @@
 /**
  Returns the array by sorting the UIView's by their tag property.
  */
-@property (nonatomic, readonly, copy) NSArray * _Nonnull sortedArrayByTag;
+@property (nonatomic, readonly, copy) NSArray<UIView*> * _Nonnull sortedArrayByTag;
 
 /**
  Returns the array by sorting the UIView's by their tag property.
  */
-@property (nonatomic, readonly, copy) NSArray * _Nonnull sortedArrayByPosition;
+@property (nonatomic, readonly, copy) NSArray<UIView*> * _Nonnull sortedArrayByPosition;
 
 @end
diff --git a/IQKeyboardManager/Categories/IQUIView+Hierarchy.h b/IQKeyboardManager/Categories/IQUIView+Hierarchy.h
index de36d2bb..bfdf15a8 100644
--- a/IQKeyboardManager/Categories/IQUIView+Hierarchy.h
+++ b/IQKeyboardManager/Categories/IQUIView+Hierarchy.h
@@ -22,6 +22,7 @@
 // THE SOFTWARE.
 
 #import <UIKit/UIView.h>
+#import <UIKit/UIViewController.h>
 #import "IQKeyboardManagerConstants.h"
 
 @class UICollectionView, UIScrollView, UITableView, UISearchBar, NSArray;
@@ -62,12 +63,12 @@
 /**
  Returns all siblings of the receiver which canBecomeFirstResponder.
  */
-@property (nonnull, nonatomic, readonly, copy) NSArray *responderSiblings;
+@property (nonnull, nonatomic, readonly, copy) NSArray<UIView*> *responderSiblings;
 
 /**
  Returns all deep subViews of the receiver which canBecomeFirstResponder.
  */
-@property (nonnull, nonatomic, readonly, copy) NSArray *deepResponderViews;
+@property (nonnull, nonatomic, readonly, copy) NSArray<UIView*> *deepResponderViews;
 
 ///-------------------------
 /// @name Special TextFields