diff --git a/.github/workflows/jsdoc-publish.yml b/.github/workflows/jsdoc-publish.yml
index 509c08803f..75bbf9bcaf 100644
--- a/.github/workflows/jsdoc-publish.yml
+++ b/.github/workflows/jsdoc-publish.yml
@@ -44,7 +44,9 @@ jobs:
       - name: get-npm-version
         id: package-version
         uses: martinbeentjes/npm-get-version-action@master
+      # --no-mime-magic --guess-mime-type flags to work around CSS incorrect MIME type issue
+      # (https://stackoverflow.com/questions/53708938/s3cmd-flagging-css-with-wrong-mime-type)
       - name: Upload versioned docs (for archival)
-        run: s3cmd put --recursive --acl-public docs/output/realm/${{ steps.package-version.outputs.current-version}}/ s3://${{ secrets.DOCS_S3_BUCKET_NAME }}/realm-sdks/js/${{ steps.package-version.outputs.current-version}}/
+        run: s3cmd put --recursive --acl-public --no-mime-magic --guess-mime-type docs/output/realm/${{ steps.package-version.outputs.current-version}}/ s3://${{ secrets.DOCS_S3_BUCKET_NAME }}/realm-sdks/js/${{ steps.package-version.outputs.current-version}}/
       - name: Upload latest docs (to live site)
-        run: s3cmd put --recursive --acl-public docs/output/realm/${{ steps.package-version.outputs.current-version}}/ s3://${{ secrets.DOCS_S3_BUCKET_NAME }}/realm-sdks/js/latest/
+        run: s3cmd put --recursive --acl-public --no-mime-magic --guess-mime-type docs/output/realm/${{ steps.package-version.outputs.current-version}}/ s3://${{ secrets.DOCS_S3_BUCKET_NAME }}/realm-sdks/js/latest/