diff --git a/.github/workflows/changelog.yml b/.github/workflows/changelog.yml
new file mode 100644
index 0000000..8809fda
--- /dev/null
+++ b/.github/workflows/changelog.yml
@@ -0,0 +1,51 @@
+name: Changelog Check
+
+on:
+  pull_request:
+    branches:
+      - main  # adjust to your default branch
+
+jobs:
+  changelog:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write  # Needed to post comments
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Needed for diff mode
+
+      - name: Validate Changelog
+        id: changelog-check
+        uses: ./changelog-check
+        with:
+          check-mode: diff
+          base-ref: ${{ github.event.pull_request.base.ref }}
+
+      - name: Find existing changelog comment
+        if: always()  # Run regardless of breaking change status
+        uses: peter-evans/find-comment@v4
+        id: find-comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          body-includes: "<!-- changelog-breaking-changes -->"
+
+      - name: Comment on breaking changes
+        if: always()  # Run regardless of breaking change status
+        uses: peter-evans/create-or-update-comment@v5
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-id: ${{ steps.find-comment.outputs.comment-id }}
+          edit-mode: replace
+          body: |
+            <!-- changelog-breaking-changes -->
+            ${{ steps.changelog-check.outputs.has_breaking == 'true' &&
+            '**This PR contains breaking changes.** Please ensure this is intentional and properly documented.' ||
+            'No breaking changes detected.' }}
+
+      - name: Fail if invalid
+        if: steps.changelog-check.outputs.is_valid != 'true'
+        run: |
+          echo "::error::CHANGELOG validation failed. Please fix the CHANGELOG.md format."
+          exit 1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c932d31..a436b20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,3 +16,16 @@ Breaking changes are prefixed with "Breaking Change: ".
   and detects breaking changes.
 - `autotag-from-changelog` action: tag and push from CHANGELOG.md version
   change.
+
+### Removed
+
+- Removed something to check workflow
+
+## [1.0.0] - 2026-03-06
+
+### Added
+
+- CHANGELOG.md and backfilled tags and changes.
+- Egress private endpoint management commands
+- Cluster disruption simulation commands
+- Physical replication stream management commands
diff --git a/changelog-check/check_breaking_changes.sh b/changelog-check/check_breaking_changes.sh
index 277e376..1ab5b95 100755
--- a/changelog-check/check_breaking_changes.sh
+++ b/changelog-check/check_breaking_changes.sh
@@ -17,7 +17,7 @@ unreleased_content="${UNRELEASED_CONTENT:-}"
 if [ "$check_mode" = "diff" ] && [ -n "$base_ref" ]; then
   log_notice "Diff mode: checking changelog changes only"
   # Get diff, filter to additions, remove file header, strip leading +
-  text_to_check=$(git diff "$base_ref" HEAD -- "$changelog" | grep "^+" | grep --invert-match "^+++" | sed 's/^+//')
+  text_to_check=$(git diff "origin/$base_ref" HEAD -- "$changelog" | grep "^+" | grep --invert-match "^+++" | sed 's/^+//')
 else
   log_notice "Checking entire Unreleased section"
   # Use the Unreleased section content from mindsers action