diff --git a/src/Payment/Http/Middleware/StripeWebhookMiddleware.php b/src/Payment/Http/Middleware/StripeWebhookMiddleware.php
index 6a1fd4c..2a2e72b 100644
--- a/src/Payment/Http/Middleware/StripeWebhookMiddleware.php
+++ b/src/Payment/Http/Middleware/StripeWebhookMiddleware.php
@@ -33,6 +33,17 @@ class StripeWebhookMiddleware
                 $secret
             );
         } catch (UnexpectedValueException|SignatureVerificationException $e) {
+            \Illuminate\Support\Facades\Log::error('Stripe webhook signature verification failed', [
+                'signature_header' => $stripeSig,
+                'secret_prefix' => substr((string) $secret, 0, 12),
+                'secret_length' => strlen((string) $secret),
+                'body_length' => strlen($request->getContent()),
+                'body_sha256' => hash('sha256', $request->getContent()),
+                'body_raw' => $request->getContent(),
+                'content_type' => $request->header('Content-Type'),
+                'content_encoding' => $request->header('Content-Encoding'),
+            ]);
+
             abort(400, $e->getMessage());
         }