diff --git a/pact_broker/Gemfile.lock b/pact_broker/Gemfile.lock
index 30dc908..b899f6b 100644
--- a/pact_broker/Gemfile.lock
+++ b/pact_broker/Gemfile.lock
@@ -54,7 +54,8 @@ GEM
     json (2.1.0)
     multi_json (1.13.1)
     multi_xml (0.6.0)
-    mustermann (1.0.3)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     mysql2 (0.5.2)
     pact-support (1.7.2)
       awesome_print (~> 1.1)
@@ -92,8 +93,8 @@ GEM
       rack
       rake (>= 0.8.1)
     pg (1.1.3)
-    rack (2.0.5)
-    rack-protection (2.0.4)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rake (12.3.1)
     randexp (0.1.7)
@@ -120,12 +121,13 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
+    ruby2_keywords (0.0.5)
     semver2 (3.4.2)
     sequel (5.13.0)
-    sinatra (2.0.4)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.4)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sqlite3 (1.3.13)
     sucker_punch (2.1.1)
@@ -135,7 +137,7 @@ GEM
     term-ansicolor (1.6.0)
       tins (~> 1.0)
     thor (0.20.0)
-    tilt (2.0.8)
+    tilt (2.0.11)
     tins (1.16.3)
     uber (0.1.0)
     webmachine (1.5.0)