diff --git a/README.md b/README.md
index 9bafe6f..d8f4e47 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Additionally, temporary PHP 7.4 support was added using these replaces:
 
 ## Version
 
-1.4.0
+1.4.1
 
 ## Installation
 
@@ -161,6 +161,9 @@ Each model represents the different kinds of requests and responses that can be
 
 ## Changelog
 
+1.4.1
+* Fix bug in [#43](https://github.com/Dwolla/dwolla-swagger-php/pull/43) to replace null-coalesce operator with backwards-compatible ternary. 
+
 1.4.0
 * Add temporary support fix for PHP 7.4. [Issue #41](https://github.com/Dwolla/dwolla-swagger-php/issues/41). (Thanks @oprypkhantc!)
 
diff --git a/lib/ApiClient.php b/lib/ApiClient.php
index 3860380..e4f689f 100644
--- a/lib/ApiClient.php
+++ b/lib/ApiClient.php
@@ -35,7 +35,7 @@ class ApiClient {
   /*
    * @var string user agent of the HTTP request, set to "PHP-Swagger" by default
    */
-  protected $user_agent = "php-swagger-1.4.0";
+  protected $user_agent = "php-swagger-1.4.1";
 
   /**
    * @param string $host Base url of the API server (optional)