diff --git a/Gemfile.lock b/Gemfile.lock
index 4b26fae..7ed5de6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,9 @@
 GIT
   remote: https://github.com/cyberarm/cyberarm_engine
-  revision: 0850336e55891f1f10dcb10e3b4b42e5f7379b33
+  revision: da4188764ce8ac6060068e09f607d1ec904fe165
   specs:
     cyberarm_engine (0.14.0)
+      clipboard (~> 1.3.4)
       gosu (~> 0.15.0)
       gosu_more_drawables (~> 0.3)
 
@@ -19,11 +20,12 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
+    clipboard (1.3.4)
     cri (2.1.0)
-    excon (0.73.0)
-    gosu (0.15.1)
-    gosu (0.15.1-x64-mingw32)
-    gosu_more_drawables (0.3.0)
+    excon (0.75.0)
+    gosu (0.15.2)
+    gosu (0.15.2-x64-mingw32)
+    gosu_more_drawables (0.3.1)
     mini_portile2 (2.5.0)
     nokogiri (1.11.0.rc2)
       mini_portile2 (~> 2.5.0)
diff --git a/rakelib/test.rake b/rakelib/test.rake
new file mode 100644
index 0000000..b9427ab
--- /dev/null
+++ b/rakelib/test.rake
@@ -0,0 +1,4 @@
+desc "Run tests"
+task :default do
+  puts "No tests implemented yet!"
+end