diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a3d998d..dfe57ca 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,7 +13,7 @@ on:
 jobs: # Docs: <https://git.io/JvxXE>
   php:
     name: PHP ${{ matrix.php }}, ${{ matrix.setup }} setup
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 10
     strategy:
       fail-fast: false
@@ -73,7 +73,7 @@ jobs: # Docs: <https://git.io/JvxXE>
 
   lint-changelog:
     name: Lint changelog file
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Check out code
         uses: actions/checkout@v4
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4bc742..c5cffc1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ 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 `Respublika Dagestan` - `105`
+
 ## v3.17.0
 
 ### Added
diff --git a/data/subject/codes.json b/data/subject/codes.json
index 5e14741..9786577 100644
--- a/data/subject/codes.json
+++ b/data/subject/codes.json
@@ -38,7 +38,8 @@
         "title": "Республика Дагестан",
         "code": 5,
         "gibdd": [
-            5
+            5,
+            105
         ],
         "code_iso_31662": "RU-DA"
     },