diff --git a/CHANGELOG.md b/CHANGELOG.md
index d8162bfb..8b93e9c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@ before starting to add changes. Use example [placed in the end of the page](#exa
 
 ## [Unreleased]
 
+## [3.13.1] 2023-10-19
+
+- Checking CPR format before fetching data
+
 ## [3.13.0] 2023-10-11
 
 - [#62](https://github.com/OS2Forms/os2forms/pull/62)