diff --git a/Gemfile.lock b/Gemfile.lock
index 9e4bcc66..ffef8743 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,6 +19,8 @@ GEM
     ffi (1.9.0)
     ffi (1.9.0-java)
     ffi (1.9.0-x86-mingw32)
+    ffi-win32-extensions (1.0.3)
+      ffi
     gherkin (2.12.2)
       multi_json (~> 1.3)
     gherkin (2.12.2-java)
@@ -78,7 +80,7 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rake (10.1.0)
+    rake (12.3.3)
     rdoc (4.0.1)
       json (~> 1.4)
     rspec (2.14.1)
@@ -106,18 +108,13 @@ GEM
       tilt (~> 1.3)
     thor (0.18.1)
     tilt (1.4.1)
-    win32-api (1.5.0-x86-mingw32)
-    win32-file (0.6.8)
-      win32-api (>= 1.2.1)
-      win32-file-stat (>= 1.3.2)
-      windows-pr (>= 1.0.8)
-    win32-file-stat (1.3.6)
-      windows-pr (>= 1.0.0)
-    windows-api (0.4.2)
-      win32-api (>= 1.4.5)
-    windows-pr (1.2.2)
-      win32-api (>= 1.4.5)
-      windows-api (>= 0.3.0)
+    win32-file (0.8.2)
+      ffi
+      ffi-win32-extensions
+      win32-file-stat (>= 1.4.0)
+    win32-file-stat (1.5.5)
+      ffi
+      ffi-win32-extensions
 
 PLATFORMS
   java