diff --git a/doc/nvim-dap-ui.txt b/doc/nvim-dap-ui.txt
index cb5f903..b9e2c65 100644
--- a/doc/nvim-dap-ui.txt
+++ b/doc/nvim-dap-ui.txt
@@ -1,5 +1,5 @@
 ================================================================================
-                                                                   *nvim-dap-ui*
+NVIM-DAP-UI                                                        *nvim-dap-ui*
 
 dapui.float_element({elem_name}, {settings})           *dapui.float_element()*
     Open a floating window containing the desired element.
@@ -42,6 +42,15 @@ dapui.eval({expr}, {settings})                                  *dapui.eval()*
         {enter}   (boolean)  Whether or not to enter the window after opening
 
 
+dapui.update_render({update})                          *dapui.update_render()*
+    Update the config.render settings and re-render windows
+
+
+    Parameters: ~
+        {update} (table)  Updated settings, from the `render` table of the
+                          config
+
+
 dapui.close({opts})                                            *dapui.close()*
     Close one or all of the window layouts
 
diff --git a/lua/dapui/config/init.lua b/lua/dapui/config/init.lua
index fb936ff..182701c 100644
--- a/lua/dapui/config/init.lua
+++ b/lua/dapui/config/init.lua
@@ -215,6 +215,10 @@ function M.render()
   return user_config.render
 end
 
+function M.update_render(update)
+  user_config.render = vim.tbl_deep_extend("keep", update, user_config.render)
+end
+
 function M.expand_lines()
   return user_config.expand_lines
 end
diff --git a/lua/dapui/init.lua b/lua/dapui/init.lua
index 9772618..7bb8632 100644
--- a/lua/dapui/init.lua
+++ b/lua/dapui/init.lua
@@ -222,6 +222,14 @@ function dapui.setup(user_config)
   end)
 end
 
+---Update the config.render settings and re-render windows
+---@param update table: Updated settings, from the `render` table of the config
+function dapui.update_render(update)
+  config.update_render(update)
+  local render = require("dapui.render")
+  render.loop.run()
+end
+
 local function keep_cmdheight(cb)
   local cmd_height = vim.o.cmdheight
 
diff --git a/lua/dapui/util.lua b/lua/dapui/util.lua
index bb67d86..1bf9a4f 100644
--- a/lua/dapui/util.lua
+++ b/lua/dapui/util.lua
@@ -201,7 +201,7 @@ function M.render_type(maybe_type)
     return ""
   end
   local max_length = config.render().max_type_length
-  if not max_length then
+  if not max_length or max_length == -1 then
     return maybe_type
   end
   if max_length == 0 then