diff --git a/Gemfile.lock b/Gemfile.lock
index e4dfc3d..291087a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,20 +83,20 @@ GEM
     concurrent-ruby (1.0.5)
     contracts (0.16.0)
     crass (1.0.4)
-    cucumber (3.1.0)
+    cucumber (3.1.1)
       builder (>= 2.1.2)
       cucumber-core (~> 3.1.0)
-      cucumber-expressions (~> 5.0.4)
+      cucumber-expressions (~> 6.0.0)
       cucumber-wire (~> 0.0.1)
       diff-lcs (~> 1.3)
-      gherkin (~> 5.0)
+      gherkin (~> 5.1.0)
       multi_json (>= 1.7.5, < 2.0)
       multi_test (>= 0.1.2)
     cucumber-core (3.1.0)
       backports (>= 3.8.0)
       cucumber-tag_expressions (~> 1.1.0)
       gherkin (>= 5.0.0)
-    cucumber-expressions (5.0.18)
+    cucumber-expressions (6.0.0)
     cucumber-tag_expressions (1.1.1)
     cucumber-wire (0.0.1)
     database_cleaner (1.7.0)