diff --git a/lib/pact_broker/client/branches/delete_branch.rb b/lib/pact_broker/client/branches/delete_branch.rb
index d5830e3..a57c5a2 100644
--- a/lib/pact_broker/client/branches/delete_branch.rb
+++ b/lib/pact_broker/client/branches/delete_branch.rb
@@ -5,8 +5,8 @@ module Client
     module Branches
       class DeleteBranch < PactBroker::Client::BaseCommand
 
-        NOT_SUPPORTED_MESSAGE_PACT_BROKER = "This version of the Pact Broker does not support deleting branches. Please upgrade to version X or later."
-        NOT_SUPPORTED_MESSAGE_PACTFLOW = "This version of PactFlow does not support deleting branches. Please upgrade to version X or later."
+        NOT_SUPPORTED_MESSAGE_PACT_BROKER = "This version of the Pact Broker does not support deleting branches. Please upgrade to version 2.108.0 or later."
+        NOT_SUPPORTED_MESSAGE_PACTFLOW = "This version of PactFlow does not support deleting branches. Please upgrade to the latest version."
 
         def initialize(params, options, pact_broker_client_options)
         	super
diff --git a/spec/lib/pact_broker/client/branches/delete_branch_spec.rb b/spec/lib/pact_broker/client/branches/delete_branch_spec.rb
index 5fe3953..c6b8008 100644
--- a/spec/lib/pact_broker/client/branches/delete_branch_spec.rb
+++ b/spec/lib/pact_broker/client/branches/delete_branch_spec.rb
@@ -84,6 +84,19 @@ module Branches
             end
           end
         end
+
+        context "when deleting branches is not supported" do
+          let(:index_response_body) do
+            {
+              _links: {}
+            }.to_json
+          end
+
+          it "returns an error" do
+            expect(subject.success).to be false
+            expect(subject.message).to include "not support"
+          end
+        end
       end
     end
   end