diff --git a/README.md b/README.md
index 00735c2..dca5766 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ seatsio-ios allows rendering seats.io seating charts inside an iOS application.
 Add this to your podfile:
 
 ```
-pod 'seatsio', '15.2.0'
+pod 'seatsio', '15.4.0'
 ```
 
 ## Usage
@@ -33,6 +33,7 @@ class SeatingChartSample: UIViewController {
 
     override func viewDidDisappear(_ animated: Bool) {
         seatsio.cleanup()
+        seatsio = nil
     }
 }
 ```
diff --git a/seatsio-ios/SeatsioWebView.swift b/seatsio-ios/SeatsioWebView.swift
index 2823867..bfc270a 100644
--- a/seatsio-ios/SeatsioWebView.swift
+++ b/seatsio-ios/SeatsioWebView.swift
@@ -184,6 +184,7 @@ public class SeatsioWebView: WKWebView {
 
     public func cleanup() {
         bridge.cleanUp()
+        bridge = nil
     }
 }
 
diff --git a/seatsio.podspec b/seatsio.podspec
index 73c41c8..83183ac 100644
--- a/seatsio.podspec
+++ b/seatsio.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'seatsio'
-  s.version          = '15.2.0'
+  s.version          = '15.4.0'
   s.summary          = 'The official Seats.io library for iOS'
   s.homepage         = 'https://github.com/seatsio/seatsio-ios'
   s.license          = { :type => 'MIT', :file => 'LICENSE' }