diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
index 7bd677a..a141bb0 100644
--- a/.github/workflows/npm-publish.yml
+++ b/.github/workflows/npm-publish.yml
@@ -26,7 +26,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: github-workflows
           fetch-depth: 0
           fetch-tags: true
       - uses: actions/setup-node@v4
@@ -54,6 +53,7 @@ jobs:
           fi
           echo "CURRENT_PKG_VERSION=$CURRENT_PKG_VERSION" >> "$GITHUB_ENV"
           echo "CURRENT_TAG_VERSION=$CURRENT_TAG_VERSION" >> "$GITHUB_ENV"
+          echo "CURRENT_PUBLISHED_VERSION=$CURRENT_PUBLISHED_VERSION" >> "$GITHUB_ENV"
           echo "SEMVER_UPDATE=${{fromJSON(vars.versions).values[inputs.version]}}" >> "$GITHUB_ENV"
       - name: Version package
         run: |
@@ -66,8 +66,7 @@ jobs:
           echo -e "Changes since ${{env.CURRENT_PKG_VERSION}}:" >> "$CHANGELOG"
           git log --pretty='format:%h %s' ${{env.CURRENT_TAG_VERSION}}..HEAD~1 | grep -v '.yml' | grep -v '\[devop\]' >> "$CHANGELOG"
           echo "" >> "$CHANGELOG"
-          ./scripts/show-size-changes.sh dist/*
-          ./scripts/show-size-changes.sh dist/* >> "$CHANGELOG"
+          BASE_PKG_VERSION="$CURRENT_PUBLISHED_VERSION" ./scripts/show-size-changes.sh dist/* | tee -a "$CHANGELOG"
           git commit --amend -F "$CHANGELOG"
           # Move the version tag to the new amended commit.
           git tag -f -m '${{env.VERSION}}' 'v${{env.VERSION}}'
diff --git a/scripts/show-size-changes.sh b/scripts/show-size-changes.sh
index 711c992..ca93d76 100755
--- a/scripts/show-size-changes.sh
+++ b/scripts/show-size-changes.sh
@@ -31,11 +31,13 @@ function calc_perc {
 EOF
 }
 
-LAST_PKG_VERSION="$(npm version --json | python3 -c 'import json; import sys; print(json.loads(sys.stdin.read()).get("jschardet"))')"
-LAST_PKG_VERSION_HASH="$(git rev-list -n 1 v$LAST_PKG_VERSION)"
+if [ -z "$BASE_PKG_VERSION" ]; then
+  BASE_PKG_VERSION="$(npm version --json | python3 -c 'import json; import sys; print(json.loads(sys.stdin.read()).get("jschardet"))')"
+fi
+BASE_PKG_VERSION_HASH="$(git rev-list -n 1 v$BASE_PKG_VERSION)"
 
-echo "Bundle size changes since v$LAST_PKG_VERSION:"
-eval "git diff-index "$LAST_PKG_VERSION_HASH" $@" | {
+echo "Bundle size changes since v$BASE_PKG_VERSION:"
+eval "git diff-index "$BASE_PKG_VERSION_HASH" $@" | {
   # vars: B=before / A=after
   # mode: A=added / D=deleted
   while read maskB maskA hashB zero mode path; do