diff --git a/assets/service_broker/Gemfile.lock b/assets/service_broker/Gemfile.lock
index 9f8a2a802..5e25d5038 100644
--- a/assets/service_broker/Gemfile.lock
+++ b/assets/service_broker/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
     json (2.7.2)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    rack (3.0.9.1)
+    rack (3.1.8)
     rack-protection (4.0.0)
       base64 (>= 0.1.0)
       rack (>= 3.0.0, < 4)
@@ -14,9 +14,8 @@ GEM
       rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
-    rackup (2.1.0)
+    rackup (2.2.1)
       rack (>= 3)
-      webrick (~> 1.8)
     rainbow (3.1.1)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
diff --git a/assets/service_broker/vendor/cache/rack-3.0.9.1.gem b/assets/service_broker/vendor/cache/rack-3.0.9.1.gem
deleted file mode 100644
index dcd522a4f..000000000
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diff --git a/assets/service_broker/vendor/cache/rack-3.1.8.gem b/assets/service_broker/vendor/cache/rack-3.1.8.gem
new file mode 100644
index 000000000..0cf2f3381
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diff --git a/assets/service_broker/vendor/cache/rackup-2.1.0.gem b/assets/service_broker/vendor/cache/rackup-2.1.0.gem
deleted file mode 100644
index 81044a323..000000000
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diff --git a/assets/service_broker/vendor/cache/rackup-2.2.1.gem b/assets/service_broker/vendor/cache/rackup-2.2.1.gem
new file mode 100644
index 000000000..286eb1596
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