diff --git a/DESCRIPTION b/DESCRIPTION
index 4c7ffcb..397a7ff 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: htmlwidgets
 Title: HTML Widgets for R
-Version: 1.6.3.9000
+Version: 1.6.4
 Authors@R: c(
     person("Ramnath", "Vaidyanathan", role = c("aut", "cph")),
     person("Yihui", "Xie", role = "aut"),
diff --git a/NEWS.md b/NEWS.md
index f545702..265eab0 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# htmlwidgets (development version)
+# htmlwidgets 1.6.4
 
 * htmlwidgets once again eagerly recurses into list-like objects when searching for JavaScript strings wrapped in `JS()`. If you encounter an infinite recursion ("C stack usage is too close to the limit"), the best strategy is to coerce the offending items to a character string. (#478)