diff --git a/docs/articles/globalstd.html b/docs/articles/globalstd.html
index f7621e8..65ec65a 100644
--- a/docs/articles/globalstd.html
+++ b/docs/articles/globalstd.html
@@ -91,7 +91,7 @@ <h1 data-toc-skip>Paired Mass Distance(PMD) analysis for GC/LC-MS
 based non-targeted analysis</h1>
                         <h4 data-toc-skip class="author">Miao Yu</h4>
             
-            <h4 data-toc-skip class="date">2024-05-29</h4>
+            <h4 data-toc-skip class="date">2024-05-30</h4>
       
       <small class="dont-index">Source: <a href="https://github.com/yufree/pmd/blob/HEAD/vignettes/globalstd.Rmd" class="external-link"><code>vignettes/globalstd.Rmd</code></a></small>
       <div class="hidden name"><code>globalstd.Rmd</code></div>
diff --git a/docs/news/index.html b/docs/news/index.html
index bfff71d..51f547e 100644
--- a/docs/news/index.html
+++ b/docs/news/index.html
@@ -70,6 +70,8 @@ <h1 data-toc-skip>Changelog <small></small></h1>
 <h2 class="page-header" data-toc-text="0.2.6" id="pmd-026">pmd 0.2.6<a class="anchor" aria-label="anchor" href="#pmd-026"></a></h2>
 <ul><li>Add <code>getpmddf</code> to show pmd details with given m/z only data and m/z group information(optional, segmentation m/z group for spatial reactomics analysis)</li>
 <li>Update reactomics vignette with section “Reactomics analysis for MS only data” and showcase the quantitative analysis for certain PMD</li>
+<li>add support for mass only data for <code>getchain</code>
+</li>
 </ul></div>
     <div class="section level2">
 <h2 class="page-header" data-toc-text="0.2.5" id="pmd-025">pmd 0.2.5<a class="anchor" aria-label="anchor" href="#pmd-025"></a></h2>
diff --git a/docs/pkgdown.yml b/docs/pkgdown.yml
index 70fb035..09330ab 100644
--- a/docs/pkgdown.yml
+++ b/docs/pkgdown.yml
@@ -4,5 +4,5 @@ pkgdown_sha: ~
 articles:
   globalstd: globalstd.html
   reactomics: reactomics.html
-last_built: 2024-05-29T13:56Z
+last_built: 2024-05-30T13:56Z