diff --git a/lib/pact_broker/string_refinements.rb b/lib/pact_broker/string_refinements.rb
index 2c389e248..0321006d0 100644
--- a/lib/pact_broker/string_refinements.rb
+++ b/lib/pact_broker/string_refinements.rb
@@ -1,5 +1,25 @@
 module PactBroker
   module StringRefinements
+    refine TrueClass do
+      def blank?
+        false
+      end
+
+      def present?
+        true
+      end
+    end
+
+    refine FalseClass do
+      def blank?
+        false
+      end
+
+      def present?
+        true
+      end
+    end
+
     refine NilClass do
       def blank?
         true