diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index ad1441c..d575bf7 100644
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -155,7 +155,7 @@ function! s:GetHeadingLinkGFM(headingName)
     " chinese chars are removed.
     " \\%#=0: allow this pattern to use the regexp engine he wants. Having
     " `set re=1` in the vimrc could break this behavior. cf. issue #19
-    let l:headingLink = substitute(l:headingLink, "\\%#=0[^[:alnum:]\u00C0-\u00FF\u0400-\u04ff\u4e00-\u9fbf _-]", "", "g")
+    let l:headingLink = substitute(l:headingLink, "\\%#=0[^[:alnum:]々〇〻\u2E80-\u2FDF\u3400-\u4DBF\u4E00-\u9FFF\uF900-\uFAFF]|[\uD840-\uD87F][\uDC00-\uDFFF _-]\\|(\\|)\\|{\\|}\\|/\\|\\$", "", "g")
     let l:headingLink = substitute(l:headingLink, " ", "-", "g")
 
     if l:headingLink ==# ""