diff --git a/friendly-captcha/friendly-captcha.php b/friendly-captcha/friendly-captcha.php
index 1d6c6e8..ad3f365 100644
--- a/friendly-captcha/friendly-captcha.php
+++ b/friendly-captcha/friendly-captcha.php
@@ -3,7 +3,7 @@
 /**
  * Plugin Name: Friendly Captcha for WordPress
  * Description: Protect WordPress website forms from spam and abuse with Friendly Captcha, a privacy-first anti-bot solution.
- * Version: 1.15.3
+ * Version: 1.15.4
  * Requires at least: 5.0
  * Requires PHP: 7.3
  * Author: Friendly Captcha GmbH
@@ -19,7 +19,7 @@
 	die;
 }
 
-define('FRIENDLY_CAPTCHA_VERSION', '1.15.3');
+define('FRIENDLY_CAPTCHA_VERSION', '1.15.4');
 define('FRIENDLY_CAPTCHA_FRIENDLY_CHALLENGE_VERSION', '0.9.18');
 define('FRIENDLY_CAPTCHA_FRIENDLY_CAPTCHA_SDK_VERSION', '0.1.8');
 define('FRIENDLY_CAPTCHA_SUPPORTED_LANGUAGES', [
diff --git a/friendly-captcha/includes/helpers.php b/friendly-captcha/includes/helpers.php
index fb8c16e..2b88be0 100644
--- a/friendly-captcha/includes/helpers.php
+++ b/friendly-captcha/includes/helpers.php
@@ -14,6 +14,18 @@ function frcaptcha_log_remote_request($url, $response)
 	trigger_error($log);
 }
 
+function frcaptcha_log_unsuccessful_verification($request, $response)
+{
+	$log = sprintf(
+		/* translators: 1: request, 2: response */
+		__('Friendly Captcha verification unsuccessful. This can usually be ignored and is only logged for debugging purposes. Request: %1$s Response: %2$s', 'frcaptcha'),
+		json_encode($request),
+		json_encode($response)
+	);
+
+	trigger_error($log);
+}
+
 function frcaptcha_v2_log_verify_response($url, $status, $errorCode)
 {
 	$log = sprintf(
diff --git a/friendly-captcha/includes/verification.php b/friendly-captcha/includes/verification.php
index 3f534c5..98237ee 100644
--- a/friendly-captcha/includes/verification.php
+++ b/friendly-captcha/includes/verification.php
@@ -64,6 +64,10 @@ function frcaptcha_v1_verify_captcha_solution($solution, $sitekey, $api_key)
         ? $response_body['errors']
         : array();
 
+    // Useful for debugging with customers
+    if (!$success && WP_DEBUG) {
+        frcaptcha_log_unsuccessful_verification($request_body, $response_body);
+    }
 
     return array(
         "success" => $success,
@@ -107,6 +111,11 @@ function frcaptcha_v2_verify_captcha_solution($solution, $sitekey, $api_key)
         );
     }
 
+    // Useful for debugging with customers
+    if (!$result->shouldAccept() && WP_DEBUG) {
+        frcaptcha_log_unsuccessful_verification($solution, $result->response);
+    }
+
     $errorCodes = $result->getErrorCode() ? [$result->getErrorCode()] : [];
     return array(
         "success" => $result->shouldAccept(),
diff --git a/friendly-captcha/readme.txt b/friendly-captcha/readme.txt
index ebf84ca..730071f 100644
--- a/friendly-captcha/readme.txt
+++ b/friendly-captcha/readme.txt
@@ -4,7 +4,7 @@ Tags: captcha, antispam, spam, contact form, recaptcha, friendly-captcha, block
 Requires at least: 5.0
 Tested up to: 6.5
 Requires PHP: 7.3
-Stable tag: 1.15.3
+Stable tag: 1.15.4
 License: GPL v2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html  
 
@@ -96,6 +96,10 @@ However, you may wish to email the authors of plugins you'd like to support Frie
 
 == Changelog ==
 
+= 1.15.4 =
+
+* Log failed verification requests when WP_DEBUG is enabled
+
 = 1.15.3 =
 
 * Remove incorrect plugin detection for Divi integration