diff --git a/README.md b/README.md
index 7979b2031b..7fac4221ba 100644
--- a/README.md
+++ b/README.md
@@ -154,7 +154,7 @@ Most of the time, the reason for failure is present in the logs.
 * `:LspInfo` (alias to `:checkhealth vim.lsp`) shows the status of active and configured language servers.
 * `:LspStart <config_name>` Start the requested server name. Will only successfully start if the command detects a root directory matching the current config.
 * `:LspStop [<client_id_or_name> ...]` Stops the given server(s). Defaults to stopping all servers active on the current buffer. To force stop add `++force`
-* `:LspRestart [<client_id_or_name> ...]` Restarts the given client(s), and attempts to reattach to all previously attached buffers.
+* `:LspRestart [<client_id_or_name> ...]` Restarts the given client(s), and attempts to reattach to all previously attached buffers. Defaults to restarting all active servers.
 
 ## Contributions
 
diff --git a/doc/lspconfig.txt b/doc/lspconfig.txt
index 8698b69b60..b63a00f5e3 100644
--- a/doc/lspconfig.txt
+++ b/doc/lspconfig.txt
@@ -93,7 +93,8 @@ servers: >vim
 
 :LspRestart [client_id] or [config_name] ...                     *:LspRestart*
 Restarts the clients with the given client-ids or config names, and attempts
-to reattach to all previously attached buffers.
+to reattach to all previously attached buffers. Defaults to restarting all
+active servers.
 
 ==============================================================================
 SERVER CONFIGS                                        *lspconfig-configurations*
diff --git a/plugin/lspconfig.lua b/plugin/lspconfig.lua
index a5cd471538..7cde138627 100644
--- a/plugin/lspconfig.lua
+++ b/plugin/lspconfig.lua
@@ -120,9 +120,21 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
   })
 
   api.nvim_create_user_command('LspRestart', function(info)
-    for _, name in ipairs(info.fargs) do
+    local clients = info.fargs
+
+    -- Default to restarting all active servers
+    if #clients == 0 then
+      clients = vim
+        .iter(vim.lsp.get_clients())
+        :map(function(client)
+          return client.name
+        end)
+        :totable()
+    end
+
+    for _, name in ipairs(clients) do
       if vim.lsp.config[name] == nil then
-        vim.notify(("Invalid server name '%s'"):format(info.args))
+        vim.notify(("Invalid server name '%s'"):format(name))
       else
         vim.lsp.enable(name, false)
       end
@@ -130,7 +142,7 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
 
     local timer = assert(vim.uv.new_timer())
     timer:start(500, 0, function()
-      for _, name in ipairs(info.fargs) do
+      for _, name in ipairs(clients) do
         vim.schedule_wrap(function(x)
           vim.lsp.enable(x)
         end)(name)
@@ -138,7 +150,7 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
     end)
   end, {
     desc = 'Restart the given client(s)',
-    nargs = '+',
+    nargs = '*',
     complete = complete_client,
   })