diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,14 @@
 # Changelog for vega-view
 
+## 0.3.1.6
+
+Update to Vega Lite version 4 and drop the version requirement on
+Vega Embed (Javascript libraries).
+
+Directory listing now has a scroll bar so that it doesn't extend beyond
+the bottom of the page (ish), which makes it much easier when flipping
+between in-line visualizations.
+
 ## 0.3.1.5
 
 Report that an error occurred when the embed option failed, which is
diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -74,7 +74,7 @@
 toJS = (H.script ! A.type_ "text/javascript") . mconcat
 
 
--- Represent a Vega or Vega-Lite sepcification, which has
+-- Represent a Vega or Vega-Lite specification, which has
 -- to be a Javascript object. Other than checking that we
 -- have an object, there is no other validation of the
 -- JSON.
@@ -662,6 +662,9 @@
             , "#visualizations { "
             , "float: left; "
             , "margin-right: 1em; "
+            , "width: 20em; "  -- seem to need this
+            , "height: 80vh; " -- guess that 80% is sensible
+            , "overflow-y: auto; "
             , "} "
             , "#visualizations h2 { "
             , "margin-bottom: 0; "
@@ -778,12 +781,12 @@
 vegaEmbed :: H.Html
 vegaEmbed =
   let load n = H.script ! A.src (mconcat [ "https://cdn.jsdelivr.net/npm/"
-                                         , n])
+                                         , n ])
 
   in do
     load "vega@5" ""
-    load "vega-lite@3" ""
-    load "vega-embed@4" ""
+    load "vega-lite@4" ""
+    load "vega-embed" ""
 
 
 pageCSS :: H.Html
diff --git a/vega-view.cabal b/vega-view.cabal
--- a/vega-view.cabal
+++ b/vega-view.cabal
@@ -1,5 +1,5 @@
 name:           vega-view
-version:        0.3.1.5
+version:        0.3.1.6
 synopsis:       Easily view Vega or Vega-Lite visualizations.
 description:    A web server that is used to view all the Vega and Vega-Lite
                 specifications in a directory, or sub-directory. It is similar
@@ -12,7 +12,7 @@
 bug-reports:    https://github.com/DougBurke/vega-view/issues
 author:         Douglas Burke
 maintainer:     dburke.gw@gmail.com
-copyright:      2019 Douglas Burke
+copyright:      2019, 2020 Douglas Burke
 license:        BSD3
 license-file:   LICENSE
 build-type:     Simple