diff --git a/DESCRIPTION b/DESCRIPTION
index 7f8d9e0..9b19fa7 100755
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: lingtypology
 Type: Package
 Title: Linguistic Typology and Mapping
-Version: 1.1.18
+Version: 1.1.19
 Depends: R (>= 3.5.0)
 Imports:
     leaflet,
diff --git a/NEWS b/NEWS
index de9efd7..4a84203 100755
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+lingtypology 1.1.19
+- update `lang.gltc()` function
+
 lingtypology 1.1.18
 - update `wals` dataset after Michael Cysouw's comment #89
 
diff --git a/R/lang.gltc.R b/R/lang.gltc.R
index bb0abc2..7438edf 100755
--- a/R/lang.gltc.R
+++ b/R/lang.gltc.R
@@ -14,7 +14,7 @@ lang.gltc <- function(x) {
     x <- unlist(x)
   }
   glottolog <- lingtypology::glottolog
-  x <- gsub("\\W", "", x)
+  x <- gsub("\\s{1,}", " ", x)
   vapply(x, function(y) {
     if(is.na(y)){
       NA_character_
diff --git a/vignettes/lingtypology_intro.R b/vignettes/lingtypology_intro.R
index fd4e8fd..c17c4c3 100644
--- a/vignettes/lingtypology_intro.R
+++ b/vignettes/lingtypology_intro.R
@@ -1,7 +1,7 @@
-## ---- eval=FALSE--------------------------------------------------------------
+## ----eval=FALSE---------------------------------------------------------------
 #  install.packages("lingtypology", dependencies = TRUE)
 
-## ---- eval= FALSE-------------------------------------------------------------
+## ----eval= FALSE--------------------------------------------------------------
 #  install.packages("remotes")
 #  remotes::install_github("ropensci/lingtypology")
 
diff --git a/vignettes/lingtypology_intro.html b/vignettes/lingtypology_intro.html
index 3dee8dc..06391c6 100644
--- a/vignettes/lingtypology_intro.html
+++ b/vignettes/lingtypology_intro.html
@@ -12,7 +12,7 @@
 
 <meta name="author" content="George Moroz" />
 
-<meta name="date" content="2024-02-04" />
+<meta name="date" content="2024-09-20" />
 
 <title>lingtypology: introduction and installation</title>
 
@@ -51,7 +51,7 @@
 </style>
 <style type="text/css" data-origin="pandoc">
 pre > code.sourceCode { white-space: pre; position: relative; }
-pre > code.sourceCode > span { display: inline-block; line-height: 1.25; }
+pre > code.sourceCode > span { line-height: 1.25; }
 pre > code.sourceCode > span:empty { height: 1.2em; }
 .sourceCode { overflow: visible; }
 code.sourceCode > span { color: inherit; text-decoration: inherit; }
@@ -341,13 +341,13 @@
 <h1 class="title toc-ignore"><code>lingtypology</code>: introduction and
 installation</h1>
 <h4 class="author">George Moroz</h4>
-<h4 class="date">2024-02-04</h4>
+<h4 class="date">2024-09-20</h4>
 
 
 
 <div id="what-is-lingtypology" class="section level3">
 <h3>What is <code>lingtypology</code>?</h3>
-<p>The <code>lingtypology</code> package connects R with the <a href="https://glottolog.org/">Glottolog database (v. 4.8)</a> and
+<p>The <code>lingtypology</code> package connects R with the <a href="https://glottolog.org/">Glottolog database (v. 5.0)</a> and
 provides an additional functionality for linguistic typology. The
 Glottolog database contains a catalogue of the world’s languages. This
 package helps researchers to make linguistic maps, using the philosophy