diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86adc27..f8ec830 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change Log
 
+## [1.9.0](/~https://github.com/maxbeckers/amazon-alexa-php/tree/1.10.0) (2021-11-26)
+[Full Changelog](/~https://github.com/maxbeckers/amazon-alexa-php/compare/1.9.0...1.10.0)
+
 ## [1.9.0](/~https://github.com/maxbeckers/amazon-alexa-php/tree/1.9.0) (2020-08-28)
 [Full Changelog](/~https://github.com/maxbeckers/amazon-alexa-php/compare/1.8.0...1.9.0)
 
diff --git a/examples/ask-for-permissions-card-response.php b/examples/ask-for-permissions-card-response.php
index 9957bd0..260e2a7 100644
--- a/examples/ask-for-permissions-card-response.php
+++ b/examples/ask-for-permissions-card-response.php
@@ -22,6 +22,11 @@
 if ($requestBody) {
     $alexaRequest = Request::fromAmazonRequest($requestBody, $_SERVER['HTTP_SIGNATURECERTCHAINURL'], $_SERVER['HTTP_SIGNATURE']);
 
+    if (!$alexaRequest) {
+        http_response_code(400);
+        exit();
+    }
+
     // Request validation
     $validator = new RequestValidator();
     $validator->validate($alexaRequest);
@@ -39,6 +44,8 @@
     // render response
     header('Content-Type: application/json');
     echo json_encode($response);
+} else {
+    http_response_code(400);
 }
 
 exit();
diff --git a/examples/card-response.php b/examples/card-response.php
index 9ccbefd..b0f3ac2 100644
--- a/examples/card-response.php
+++ b/examples/card-response.php
@@ -22,6 +22,11 @@
 if ($requestBody) {
     $alexaRequest = Request::fromAmazonRequest($requestBody, $_SERVER['HTTP_SIGNATURECERTCHAINURL'], $_SERVER['HTTP_SIGNATURE']);
 
+    if (!$alexaRequest) {
+        http_response_code(400);
+        exit();
+    }
+
     // Request validation
     $validator = new RequestValidator();
     $validator->validate($alexaRequest);
@@ -39,6 +44,8 @@
     // render response
     header('Content-Type: application/json');
     echo json_encode($response);
+} else {
+    http_response_code(400);
 }
 
 exit();
diff --git a/examples/simple-intent-request.php b/examples/simple-intent-request.php
index e9b3224..d89f4d8 100644
--- a/examples/simple-intent-request.php
+++ b/examples/simple-intent-request.php
@@ -22,6 +22,11 @@
 if ($requestBody) {
     $alexaRequest = Request::fromAmazonRequest($requestBody, $_SERVER['HTTP_SIGNATURECERTCHAINURL'], $_SERVER['HTTP_SIGNATURE']);
 
+    if (!$alexaRequest) {
+        http_response_code(400);
+        exit();
+    }
+
     // Request validation
     $validator = new RequestValidator();
     $validator->validate($alexaRequest);
@@ -39,6 +44,8 @@
     // render response
     header('Content-Type: application/json');
     echo json_encode($response);
+} else {
+    http_response_code(400);
 }
 
 exit();