diff --git a/code/model/ErrorPage.php b/code/model/ErrorPage.php
index 9291dbba..c0118997 100644
--- a/code/model/ErrorPage.php
+++ b/code/model/ErrorPage.php
@@ -201,6 +201,8 @@ class ErrorPage extends Page {
 					415 => _t('ErrorPage.415', '415 - Unsupported Media Type'),
 					416 => _t('ErrorPage.416', '416 - Request Range Not Satisfiable'),
 					417 => _t('ErrorPage.417', '417 - Expectation Failed'),
+					422 => _t('ErrorPage.422', '422 - Unprocessable Entity'),
+					429 => _t('ErrorPage.429', '429 - Too Many Requests'),
 					500 => _t('ErrorPage.500', '500 - Internal Server Error'),
 					501 => _t('ErrorPage.501', '501 - Not Implemented'),
 					502 => _t('ErrorPage.502', '502 - Bad Gateway'),
diff --git a/lang/en.yml b/lang/en.yml
index e73b0e75..0bc207c9 100644
--- a/lang/en.yml
+++ b/lang/en.yml
@@ -200,6 +200,8 @@ en:
     415: '415 - Unsupported Media Type'
     416: '416 - Request Range Not Satisfiable'
     417: '417 - Expectation Failed'
+    422: '422 - Unprocessable Entity'
+    429: '429 - Too Many Requests'
     500: '500 - Internal Server Error'
     501: '501 - Not Implemented'
     502: '502 - Bad Gateway'