diff --git a/src/content/docs/usage/errors.mdoc b/src/content/docs/usage/errors.mdoc
index 73158eb..1c253e4 100644
--- a/src/content/docs/usage/errors.mdoc
+++ b/src/content/docs/usage/errors.mdoc
@@ -43,6 +43,7 @@ This document describes the different errors Vikunja can return.
 |-----------|------------------|-------------|
 | 2001 | 400 | ID cannot be empty or 0. |
 | 2002 | 400 | Some of the request data was invalid. The response contains an additional array with all invalid fields. |
+| 2003 | 400 | The provided time zone was invalid. |
 
 ## Project