diff --git a/Gemfile.lock b/Gemfile.lock
index 89370cd..6e7fba4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,33 +16,38 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     ansi-to-html (0.0.3)
-    aruba (0.14.2)
-      childprocess (~> 0.5.6)
+    aruba (0.14.14)
+      childprocess (>= 0.6.3, < 4.0.0)
       contracts (~> 0.9)
       cucumber (>= 1.3.19)
-      ffi (~> 1.9.10)
+      ffi (~> 1.9)
       rspec-expectations (>= 2.99)
-      thor (~> 0.19)
+      thor (>= 0.19, < 2.0)
+    backports (3.15.0)
     binding_of_caller (0.7.3)
       debug_inspector (>= 0.0.1)
     bson (4.2.1)
-    builder (3.2.2)
+    builder (3.2.4)
     cassandra-driver (3.1.0)
       ione (~> 1.2)
-    childprocess (0.5.9)
-      ffi (~> 1.0, >= 1.0.11)
+    childprocess (3.0.0)
     coderay (1.1.1)
-    contracts (0.14.0)
-    cucumber (2.4.0)
+    contracts (0.16.0)
+    cucumber (3.1.2)
       builder (>= 2.1.2)
-      cucumber-core (~> 1.5.0)
+      cucumber-core (~> 3.2.0)
+      cucumber-expressions (~> 6.0.1)
       cucumber-wire (~> 0.0.1)
-      diff-lcs (>= 1.1.3)
-      gherkin (~> 4.0)
+      diff-lcs (~> 1.3)
+      gherkin (~> 5.1.0)
       multi_json (>= 1.7.5, < 2.0)
       multi_test (>= 0.1.2)
-    cucumber-core (1.5.0)
-      gherkin (~> 4.0)
+    cucumber-core (3.2.1)
+      backports (>= 3.8.0)
+      cucumber-tag_expressions (~> 1.1.0)
+      gherkin (~> 5.0)
+    cucumber-expressions (6.0.1)
+    cucumber-tag_expressions (1.1.1)
     cucumber-wire (0.0.1)
     debug_inspector (0.0.3)
     declarative (0.0.9)
@@ -52,9 +57,9 @@ GEM
     fakefs (0.11.3)
     faker (1.7.3)
       i18n (~> 0.5)
-    ffi (1.9.14)
+    ffi (1.11.3)
     formatador (0.2.5)
-    gherkin (4.0.0)
+    gherkin (5.1.0)
     gruff (0.7.0)
       rmagick (~> 2.13, >= 2.13.4)
     i18n (0.8.6)
@@ -72,7 +77,7 @@ GEM
       ffi (~> 1.9)
     mongo (2.4.1)
       bson (>= 4.2.1, < 5.0.0)
-    multi_json (1.12.1)
+    multi_json (1.14.1)
     multi_test (0.1.2)
     mysql2 (0.4.6)
     nose (0.1.1)