diff --git a/CHANGELOG.md b/CHANGELOG.md
index 939135991258fdbee2cad9a0f3eb69c621e230a3..c44bf38a16ee1c302412a48c1e1af0251a240b2b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,176 @@
+### 13.0.0 Update to Angular 13, CI/CD optimization, hasRelation changes to counter of relations.
+* 596ee4f -- [CI/CD] Update packages.json version based on GitLab tag.
+*   ca20eed -- Merge branch '40-update-to-angular-13' into 'master'
+|\  
+| * 59b0694 -- Resolve "Update to Angular 13"
+|/  
+*   a9bb8d3 -- Merge branch '41-change-hasrelation-to-counter' into 'master'
+|\  
+| * 2c67820 -- Resolve "Change hasRelation to counter"
+|/  
+* e099416 -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* e876451 -- [CI/CD] Update packages.json version based on GitLab tag.
+*   1c9741a -- Merge branch '39-release-latest-version' into 'master'
+|\  
+| * e6db60c -- Tag message
+|/  
+*   9feca85 -- Merge branch '33-integrate-command-visualization' into 'master'
+|\  
+| * fea4805 -- Change reference solution data model
+| *   73509cd -- Merged with master. ReferenceSolution class renamed to ReferenceSolutionNode.
+| |\  
+| * | 2f32c02 -- Added reference solution class
+* | |   3fe84f5 -- Merge branch '38-add-hasrelation-attribute-to-adaptivequestion' into 'master'
+|\ \ \  
+| |_|/  
+|/| |   
+| * | 7f1a1ab -- Added hasRelation attribute
+|/ /  
+* |   5a63ad8 -- Merge branch '37-add-license-file' into 'master'
+|\ \  
+| * | 9f96edf -- Added license file
+|/ /  
+* | 0611c70 -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* | 82022d7 -- [CI/CD] Update packages.json version based on GitLab tag.
+* |   0bb2026 -- Merge branch '36-create-minor-tag' into 'master'
+|\ \  
+| * | 7fce757 -- Tag message
+|/ /  
+* |   1124281 -- Merge branch '35-create-training-run-info-class' into 'master'
+|\ \  
+| * | 329ed3d -- Resolve "Create Training run info class"
+|/ /  
+* |   2f6d3cd -- Merge branch '34-move-attribute-variantsandboxes-from-definition-to-training-level-as-variantanswers' into 'master'
+|\ \  
+| |/  
+|/|   
+| * 331c0f0 -- Removed variantSandboxes from training definition. Added variantAnswers to training level.
+|/  
+* e160fcf -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* e7c97d9 -- [CI/CD] Update packages.json version based on GitLab tag.
+*   01fbd92 -- Merge branch '30-add-attribute-defaultcontent-to-training-definition-model' into 'master'
+|\  
+| * dedbeea -- Added attribute defaultContent to training definition model.
+|/  
+* 061d065 -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* 71e7035 -- [CI/CD] Update packages.json version based on GitLab tag.
+*   cd84658 -- Merge branch '32-bump-version' into 'master'
+|\  
+| * a6896fc -- Bump version
+|/  
+*   e511172 -- Merge branch '31-add-last-edit-by-field' into 'master'
+|\  
+| * 2eea3da -- Add last edit by field
+|/  
+* b38f3cd -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* 0af7ebe -- [CI/CD] Update packages.json version based on GitLab tag.
+*   986f45c -- Merge branch '22-add-necessary-attributes-to-models-for-integration-apg' into 'master'
+|\  
+| * d2af122 -- Changed version to 12.0.5
+| *   ecfe2cb -- Merged with master
+| |\  
+| |/  
+|/|   
+* | 0421fc7 -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* | ae084b0 -- [CI/CD] Update packages.json version based on GitLab tag.
+* |   5543fd1 -- Merge branch '26-rename-game-level-to-training-level' into 'master'
+|\ \  
+| * | 614eafa -- Renaming the game level to training level.
+|/ /  
+* |   d027fc4 -- Merge branch '25-rename-the-attribute-flag-to-the-answer-in-linear-training-definition' into 'master'
+|\ \  
+| * | 26a1a85 -- Rename flag to answer and incorrectFlagLimit to incorrectAnswerLimit.
+|/ /  
+* | 064be74 -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* | c6829fe -- [CI/CD] Update packages.json version based on GitLab tag.
+* |   0de4f5c -- Merge branch '24-remove-redundant-attribute' into 'master'
+|\ \  
+| * | ebb0ea2 -- Remove redundant attribute
+|/ /  
+* |   5d32c31 -- Merge branch '23-add-valid-attribute-to-adaptivequestion' into 'master'
+|\ \  
+| * | 4723bb3 -- Resolve "Add valid attribute to AdaptiveQuestion"
+* | |   18fc492 -- Merge branch '21-add-preview-to-trainingruninfo' into 'master'
+|\ \ \  
+| |/ /  
+|/| |   
+| * | d0b9de2 -- Added isPreview attribute to access training run info
+|/ /  
+| * ac28159 -- Renaming variantAnswers to variantSandboxes and flagIdentifier to flagVariableName.
+| * ae46584 -- Added attributes variantAnswers and flagIdentifier to the respective models.
+|/  
+* 1edabe7 -- [CI/CD] CHANGELOG.md file updated with commits between the current and previous tag.
+* 27b616f -- [CI/CD] Update packages.json version based on GitLab tag.
+*   9fabf2a -- Merge branch '20-rollback-version' into 'master'
+|\  
+| * e17e4f7 -- Rollback version
+|/  
+*   e4bfb3a -- Merge branch '19-bump-version-of-training-model' into 'master'
+|\  
+| * 4b3f4b8 -- Bump version
+|/  
+*   ad679e6 -- Merge branch '18-fix-version-update-script' into 'master'
+|\  
+| * 611555d -- Fix update version script
+|/  
+*   7170b4e -- Merge branch '16-simplify-gitlab-ci-cd-using-csirt-mu-docker-image' into 'master'
+|\  
+| * 5767ea5 -- Resolve "Simplify Gitlab CI/CD using CSIRT-MU Docker image"
+|/  
+* e70e18d -- Update project package.json version based on GitLab tag. Done by CI
+*   b5b35cc -- Merge branch '17-update-to-angular-12' into 'master'
+|\  
+| * 1ffa5fb -- Resolve "Update to Angular 12"
+|/  
+* bf6880b -- Update project package.json version based on GitLab tag. Done by CI
+*   8eee688 -- Merge branch '15-change-models-of-the-questions-in-the-assessment-level-according-to-the-new-design' into 'master'
+|\  
+| * c517478 -- Resolve "Change models of the questions in the assessment level according to the new design"
+|/  
+* ba7796c -- Update project package.json version based on GitLab tag. Done by CI
+*   f3e1f4f -- Merge branch '14-add-new-models-for-adaptive-trainings' into 'master'
+|\  
+| * a11c285 -- Resolve "Add new models for adaptive trainings"
+|/  
+* 1a19b41 -- Update project package.json version based on GitLab tag. Done by CI
+*   6e7c6b5 -- Merge branch '13-update-peerdependencies-to-angular-11' into 'master'
+|\  
+| * 5a6e09a -- peerDependency update
+|/  
+* 014de60 -- Update project package.json version based on GitLab tag. Done by CI
+*   54f9d79 -- Merge branch '12-update-to-angular-11' into 'master'
+|\  
+| * 4810134 -- Update to Angular 11
+|/  
+*   23fa37c -- Merge branch '11-recreate-package-lock-for-new-package-registry' into 'master'
+|\  
+| * 49a5c36 -- recreate package lock
+|/  
+* f5811dd -- Update project package.json version based on GitLab tag. Done by CI
+*   731aa45 -- Merge branch '10-rename-package-scope-to-muni-kypo-crp' into 'master'
+|\  
+| * 2990f65 -- Rename the package scope
+|/  
+*   1be3963 -- Merge branch '9-migrate-from-tslint-to-eslint' into 'master'
+|\  
+| * 02b6a4f -- Resolve "Migrate from tslint to eslint"
+|/  
+* 8d04b92 -- Update project package.json version based on GitLab tag. Done by CI
+*   1a88d70 -- Merge branch '8-rename-package-to-kypo-training-model' into 'master'
+|\  
+| * aaca125 -- Rename the package
+|/  
+*   2654526 -- Merge branch '7-use-cypress-image-in-ci' into 'master'
+|\  
+| * e714422 -- Resolve "Use cypress image in CI"
+|/  
+* 6d5a946 -- Update project package.json version based on GitLab tag. Done by CI
+*   80ef3d7 -- Merge branch '6-update-to-angular-10' into 'master'
+|\  
+| * c039d69 -- Update to angular 10
+|/  
+* 2d8acc2 -- Merge branch '5-make-the-ci-build-stage-build-with-prod-param' into 'master'
+* 07b2223 -- Update .gitlab-ci.yml
 ### 12.1.0 Added reference solution to training definition. Attribute hasRelation for adaptive questions added.
 * e876451 -- [CI/CD] Update packages.json version based on GitLab tag.
 *   1c9741a -- Merge branch '39-release-latest-version' into 'master'