diff --git a/examples/Gemfile.lock b/examples/Gemfile.lock
index 1d4d413..4184c2d 100644
--- a/examples/Gemfile.lock
+++ b/examples/Gemfile.lock
@@ -35,7 +35,7 @@ GEM
     json (2.6.2)
     multi_json (1.15.0)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     pact (1.62.0)
       pact-mock_service (~> 3.0, >= 3.3.1)
@@ -75,8 +75,8 @@ GEM
       expgen (~> 0.1)
       term-ansicolor (~> 1.0)
     parslet (2.0.0)
-    rack (2.2.3.1)
-    rack-protection (2.2.0)
+    rack (2.2.6.2)
+    rack-protection (3.0.5)
       rack
     rack-proxy (0.7.2)
       rack
@@ -101,22 +101,22 @@ GEM
     rspec_junit_formatter (0.5.1)
       rspec-core (>= 2, < 4, != 2.12.0)
     ruby2_keywords (0.0.5)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.0)
+    sinatra (3.0.5)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.5)
       tilt (~> 2.0)
-    sinatra-contrib (2.2.0)
+    sinatra-contrib (3.0.5)
       multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.2.0)
-      sinatra (= 2.2.0)
+      mustermann (~> 3.0)
+      rack-protection (= 3.0.5)
+      sinatra (= 3.0.5)
       tilt (~> 2.0)
     sync (0.5.0)
     term-ansicolor (1.7.1)
       tins (~> 1.0)
     thor (1.2.1)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tins (1.31.1)
       sync
     webrick (1.7.0)