diff --git a/History.md b/History.md
index 0d2ecb69..16477bf7 100644
--- a/History.md
+++ b/History.md
@@ -1,12 +1,12 @@
 # Version 3.1.0
-Release date: unreleased
+Release date: 2018-05-10
 
 ### Added
 
 * Support for using `select` with text inputs associated with a datalist element
 * `type` filter on `:button` selector
 * Support for server operating in https mode
-* Selenium driver now uses JS to fill_in date and time fields when passed date or time objects [Aleksei Gusev, Thomas Walpole]
+* Selenium driver now uses JS to fill_in/set date and time fields when passed date or time objects [Aleksei Gusev, Thomas Walpole]
 
 # Version 3.0.3
 Release date: 2018-04-30
diff --git a/lib/capybara/spec/session/window/window_spec.rb b/lib/capybara/spec/session/window/window_spec.rb
index f78a1fce..00b4fa2d 100644
--- a/lib/capybara/spec/session/window/window_spec.rb
+++ b/lib/capybara/spec/session/window/window_spec.rb
@@ -119,7 +119,7 @@ Capybara::SpecHelper.spec Capybara::Window, requires: [:windows] do
 
     it 'should be able to resize window', requires: %i[windows js] do
       width, height = @initial_size
-      @session.current_window.resize_to(width -100, height - 100)
+      @session.current_window.resize_to(width - 100, height - 100)
       sleep 1
       expect(@session.current_window.size).to eq([width - 100, height - 100])
     end
diff --git a/lib/capybara/version.rb b/lib/capybara/version.rb
index fa39d823..1af19ccb 100644
--- a/lib/capybara/version.rb
+++ b/lib/capybara/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Capybara
-  VERSION = '3.1.0.dev'.freeze
+  VERSION = '3.1.0'.freeze
 end