diff --git a/Gemfile.lock b/Gemfile.lock
index 9e4bcc66..98de12d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.5)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     backports (3.6.8)
     bouncy-castle-java (1.5.0147)
     builder (3.2.2)
@@ -19,6 +20,8 @@ GEM
     ffi (1.9.0)
     ffi (1.9.0-java)
     ffi (1.9.0-x86-mingw32)
+    ffi-win32-extensions (1.0.4)
+      ffi
     gherkin (2.12.2)
       multi_json (~> 1.3)
     gherkin (2.12.2-java)
@@ -73,6 +76,7 @@ GEM
     ptools (1.2.2)
     ptools (1.2.2-x86-mingw32)
       win32-file (>= 0.5.4)
+    public_suffix (5.0.0)
     rack (1.5.2)
     rack-protection (1.5.1)
       rack
@@ -106,18 +110,13 @@ 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