diff --git a/CHANGELOG.md b/CHANGELOG.md
index f4f5217..0ff3dab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog][keepachangelog] and this project adheres to [Semantic Versioning][semver].
 
+## Unreleased
+
+### Added
+
+- GIBDD region code for `Krasnojarskij kraj` - `224`
+- GIBDD region code for `Belgorodskaya oblast` - `131`
+
 ## v3.18.0
 
 ### Added
diff --git a/data/subject/codes.json b/data/subject/codes.json
index 9786577..7fb4b34 100644
--- a/data/subject/codes.json
+++ b/data/subject/codes.json
@@ -205,6 +205,7 @@
         "gibdd": [
             24,
             124,
+            224,
             88
         ],
         "code_iso_31662": "RU-KYA"
@@ -266,7 +267,8 @@
         "title": "Белгородская область",
         "code": 31,
         "gibdd": [
-            31
+            31,
+            131
         ],
         "code_iso_31662": "RU-BEL"
     },