diff --git a/CHANGELOG.md b/CHANGELOG.md
index b020300..022fefc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# [4.0.2](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/tree/4.0.2) [UNRELEASED]
+
+- Fixed floating event stream bad state exception [#157](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/issues/157).
+
 # [4.0.1](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/tree/4.0.1)
 
 - Fixed glare effect issue [#154](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/pull/154).
diff --git a/lib/src/credit_card_widget.dart b/lib/src/credit_card_widget.dart
index 8b55432..f5083c1 100644
--- a/lib/src/credit_card_widget.dart
+++ b/lib/src/credit_card_widget.dart
@@ -359,7 +359,7 @@ class _CreditCardWidgetState extends State<CreditCardWidget>
   }
 
   void _processFloatingEvent(FloatingEvent? event) {
-    if (event == null || controller.isAnimating) {
+    if (!mounted || event == null || controller.isAnimating) {
       return;
     }