diff --git a/pact_broker/Gemfile.lock b/pact_broker/Gemfile.lock
index 6497aa2..f779b03 100644
--- a/pact_broker/Gemfile.lock
+++ b/pact_broker/Gemfile.lock
@@ -64,7 +64,7 @@ GEM
     mini_portile2 (2.8.0)
     multi_json (1.15.0)
     multi_xml (0.6.0)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     mysql2 (0.5.4)
     nokogiri (1.13.7)
@@ -114,7 +114,7 @@ GEM
     pg (1.4.1)
     racc (1.6.0)
     rack (2.2.4)
-    rack-protection (2.2.0)
+    rack-protection (2.2.3)
       rack
     rainbow (3.1.1)
     rake (13.0.6)
@@ -140,10 +140,10 @@ GEM
       concurrent-ruby (~> 1.0)
     semver2 (3.4.2)
     sequel (5.58.0)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.2.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sqlite3 (1.4.4)
     sucker_punch (2.1.2)
@@ -151,7 +151,7 @@ GEM
     table_print (1.5.7)
     temple (0.8.2)
     thor (1.2.1)
-    tilt (2.0.10)
+    tilt (2.0.11)
     uber (0.1.0)
     webmachine (1.6.0)
       as-notifications (~> 1.0)