diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
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@@ -1,3 +1,17 @@
+### 15.0.0 Update to Angular 15
+* a66aef7 -- [CI/CD] Update packages.json version based on GitLab tag.
+*   a781a63 -- Merge branch '5-add-local-mock-data-for-static-deployed-demonstration' into 'master'
+|\  
+| * e8b6977 -- Update to Angular 15
+* | e835632 -- Merge branch '5-add-local-mock-data-for-static-deployed-demonstration' into 'master'
+|\| 
+| * a358225 -- Update lint rules and mock service
+| * 0f78cbf -- Prettify the code
+| * dcbae84 -- Fix chart display delay
+| * 110248e -- Add new mocking service
+|/  
+* 4986b5a -- Merge branch '4-fix-axes-tooltip' into 'master'
+* e34126b -- Resolve "Fix axes tooltip"
 ### 14.0.2 Propagate insufficient data info for dashboard processing
 * 864fbd0 -- [CI/CD] Update packages.json version based on GitLab tag.
 * 443a0c3 -- Merge branch '3-indicate-insufficient-data' into 'master'