diff --git a/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb b/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb
index 9e945440c..a511b0e5b 100644
--- a/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb
+++ b/lib/vagrant/protobufs/proto/vagrant_plugin_sdk/plugin_pb.rb
@@ -52,6 +52,9 @@ Google::Protobuf::DescriptorPool.generated_pool.build do
     add_message "hashicorp.vagrant.sdk.Args.Folder" do
       map :folders, :string, :message, 1, "google.protobuf.Any"
     end
+    add_message "hashicorp.vagrant.sdk.Args.TimeDuration" do
+      optional :duration, :int32, 1
+    end
     add_message "hashicorp.vagrant.sdk.Args.TerminalUI" do
       optional :stream_id, :uint32, 1
       optional :network, :string, 2
@@ -838,6 +841,7 @@ module Hashicorp
       Args::MetadataSet = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.MetadataSet").msgclass
       Args::Path = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.Path").msgclass
       Args::Folder = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.Folder").msgclass
+      Args::TimeDuration = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.TimeDuration").msgclass
       Args::TerminalUI = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.TerminalUI").msgclass
       Args::Logger = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.Logger").msgclass
       Args::JobInfo = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("hashicorp.vagrant.sdk.Args.JobInfo").msgclass
diff --git a/plugins/commands/serve/mappers/communicator.rb b/plugins/commands/serve/mappers/communicator.rb
index a80ad0349..afd75707f 100644
--- a/plugins/commands/serve/mappers/communicator.rb
+++ b/plugins/commands/serve/mappers/communicator.rb
@@ -17,6 +17,24 @@ module VagrantPlugins
           SDK::Communicator::Command.decode(proto.value.value)
         end
       end
+
+      class TimeDurationFromSpec < Mapper
+        def initialize
+          super(
+            inputs: [Input.new(type: SDK::FuncSpec::Value) { |arg|
+                arg.type == "hashicorp.vagrant.sdk.Args.TimeDuration" &&
+                  !arg&.value&.value.nil?
+              }
+            ],
+            output: SDK::Args::TimeDuration,
+            func: method(:converter),
+          )
+        end
+
+        def converter(fv)
+          SDK::Args::TimeDuration.decode(fv.value.value)
+        end
+      end
     end
   end
 end