add line_sep to add_header_above
diff --git a/DESCRIPTION b/DESCRIPTION
index 955536c..ca44252 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -42,7 +42,8 @@
     stats,
     grDevices,
     htmltools,
-    rstudioapi
+    rstudioapi,
+    glue
 Suggests:
     testthat,
     magick,