diff --git a/Gemfile.lock b/Gemfile.lock
index c6b1176..4f7f1a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,6 +48,7 @@ GEM
       ffi (~> 1.9.10)
       rspec-expectations (>= 2.99)
       thor (~> 0.19)
+    backports (3.8.0)
     bcrypt (3.1.11)
     better_errors (2.3.0)
       coderay (>= 1.0.0)
@@ -82,16 +83,21 @@ GEM
     contracts (0.16.0)
     crack (0.3.1)
     crass (1.0.2)
-    cucumber (2.4.0)
+    cucumber (3.0.0)
       builder (>= 2.1.2)
-      cucumber-core (~> 1.5.0)
+      cucumber-core (~> 3.0.0)
+      cucumber-expressions (~> 4.0.3)
       cucumber-wire (~> 0.0.1)
-      diff-lcs (>= 1.1.3)
+      diff-lcs (~> 1.3)
       gherkin (~> 4.0)
       multi_json (>= 1.7.5, < 2.0)
       multi_test (>= 0.1.2)
-    cucumber-core (1.5.0)
-      gherkin (~> 4.0)
+    cucumber-core (3.0.0)
+      backports (>= 3.8.0)
+      cucumber-tag_expressions (>= 1.0.1)
+      gherkin (>= 4.1.3)
+    cucumber-expressions (4.0.3)
+    cucumber-tag_expressions (1.0.1)
     cucumber-wire (0.0.1)
     database_cleaner (1.6.1)
     debug_inspector (0.0.3)