diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 46ccb8e..67cd067 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -72,6 +72,8 @@ jobs:
     if: github.event_name == 'release'
     steps:
       - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GH_ACTION_ACCESS_TOKEN }}
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -87,3 +89,31 @@ jobs:
         with:
           user: __token__
           password: ${{ secrets.PYPI_API_TOKEN }}
+      - name: Update CHANGELOG.md
+        run: |
+          TMP_FILE=$(mktemp)
+
+          RELEASE_VERSION=$(jq -r '.release' .release.json)
+          RELEASE_DATE=`date +'%dth %B %Y' | sed -E 's/^0//;s/^([2,3]?)1th/\11st/;s/^([2]?)2th/\12nd/;s/^([2]?)3th/\13rd/'`
+
+          SPEC_COMMIT_SHA=$(jq -r '.source.short_sha' .release.json)
+          SPEC_COMMIT_URL=$(jq -r '.source.repo_url + "/commit/" + .source.long_sha' .release.json)
+          SPEC_RELEASE_VERSION=$(jq -r '.source.version' .release.json)
+          SPEC_RELEASE_URL=$(jq -r '.source.repo_url + "/releases/tag/" + .source.version' .release.json)
+
+          echo -e "# Changelog\n\n## $RELEASE_VERSION $RELEASE_DATE\n\n" >| $TMP_FILE
+          echo -en "${{ github.event.release.body }}\nBased on Onfido OpenAPI spec " >> $TMP_FILE
+
+          if [ -z $SPEC_RELEASE_VERSION ]; then
+            echo "up to commit [$SPEC_COMMIT_SHA](${SPEC_COMMIT_URL})." >> $TMP_FILE
+          else
+            echo "version [$SPEC_RELEASE_VERSION](${SPEC_RELEASE_URL})." >> $TMP_FILE
+          fi
+
+          grep -v "^# Changelog" CHANGELOG.md >> $TMP_FILE
+          mv $TMP_FILE CHANGELOG.md
+
+          git config user.name "GitHub Actions Bot"
+          git config user.email "<>"
+          git commit -m "Update CHANGELOG.md after library release" CHANGELOG.md
+          git push
diff --git a/CHANGELOG.md b/CHANGELOG.md
index eece340..b1aae58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,5 @@
 # Changelog
 
-## v3.0.0 14th Jun 2024
-
-- Make library auto-generated and based on [Onfido OpenAPI spec](https://github.com/onfido/onfido-openapi-spec)
-- Refresh library up to commit: [62dc554](https://github.com/onfido/onfido-openapi-spec/commit/62dc5541a4a51e8de313fc99fb3dec496033a23e)
-
 ## v2.10.0 24th November 2023
 
 - Added core methods for [WorkflowRuns](https://documentation.onfido.com/#workflow-runs)
diff --git a/tests/test_report_schemas.py b/tests/test_report_schemas.py
index e0714b8..0796aaf 100644
--- a/tests/test_report_schemas.py
+++ b/tests/test_report_schemas.py
@@ -68,3 +68,4 @@ def test_schema_of_facial_similarity_report_id_valid(
         onfido_api.find_report, [facial_similarity_report_id], ReportStatus.COMPLETE
     )
     assert isinstance(facial_similarity_report, FacialSimilarityPhotoReport)
+    assert facial_similarity_report.properties.score is None