diff --git a/CHANGELOG.md b/CHANGELOG.md
index f81fe26..88ee978 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased] - yyyy-mm-dd
 
+## [6.4.3] - 2024-05-16
+
+### Fixed
+
+- replace `/` with `-` in label `name` in outbox_last_stored_event_id / outbox_created_counter
+
 ## [6.4.2] - 2024-05-07
 
 ### Fixed
diff --git a/app/interactors/sbmt/outbox/base_create_item.rb b/app/interactors/sbmt/outbox/base_create_item.rb
index beca850..8d3a8e6 100644
--- a/app/interactors/sbmt/outbox/base_create_item.rb
+++ b/app/interactors/sbmt/outbox/base_create_item.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "sbmt/outbox/metrics/utils"
+
 module Sbmt
   module Outbox
     class BaseCreateItem < Outbox::DryInteractor
@@ -41,14 +43,14 @@ def track_last_stored_id(item_id, partition)
         Yabeda
           .outbox
           .last_stored_event_id
-          .set({type: box_type, name: box_name, owner: owner, partition: partition}, item_id)
+          .set({type: box_type, name: Sbmt::Outbox::Metrics::Utils.metric_safe(box_name), owner: owner, partition: partition}, item_id)
       end
 
       def track_counter(partition)
         Yabeda
           .outbox
           .created_counter
-          .increment({type: box_type, name: box_name, owner: owner, partition: partition}, by: 1)
+          .increment({type: box_type, name: Sbmt::Outbox::Metrics::Utils.metric_safe(box_name), owner: owner, partition: partition}, by: 1)
       end
     end
   end
diff --git a/lib/sbmt/outbox/version.rb b/lib/sbmt/outbox/version.rb
index 2d2482e..2467250 100644
--- a/lib/sbmt/outbox/version.rb
+++ b/lib/sbmt/outbox/version.rb
@@ -2,6 +2,6 @@
 
 module Sbmt
   module Outbox
-    VERSION = "6.4.2"
+    VERSION = "6.4.3"
   end
 end
diff --git a/spec/interactors/sbmt/outbox/create_inbox_item_spec.rb b/spec/interactors/sbmt/outbox/create_inbox_item_spec.rb
index b807f14..584669c 100644
--- a/spec/interactors/sbmt/outbox/create_inbox_item_spec.rb
+++ b/spec/interactors/sbmt/outbox/create_inbox_item_spec.rb
@@ -17,7 +17,9 @@
   end
 
   it "tracks Yabeda metrics" do
-    expect { result }.to update_yabeda_gauge(Yabeda.outbox.last_stored_event_id)
+    expect { result }
+      .to update_yabeda_gauge(Yabeda.outbox.last_stored_event_id).with_tags(name: "inbox_item", type: :inbox, owner: nil, partition: 0)
+      .and increment_yabeda_counter(Yabeda.outbox.created_counter).with_tags(name: "inbox_item", type: :inbox, owner: nil, partition: 0)
   end
 
   context "when got errors" do
@@ -26,7 +28,9 @@
     end
 
     it "does not track Yabeda metrics" do
-      expect { result }.not_to update_yabeda_gauge(Yabeda.outbox.last_stored_event_id)
+      expect { result }
+        .to not_update_yabeda_gauge(Yabeda.outbox.last_stored_event_id)
+        .and not_increment_yabeda_counter(Yabeda.outbox.created_counter)
     end
 
     it "returns errors" do
diff --git a/spec/interactors/sbmt/outbox/create_outbox_item_spec.rb b/spec/interactors/sbmt/outbox/create_outbox_item_spec.rb
index c28752a..b44f11a 100644
--- a/spec/interactors/sbmt/outbox/create_outbox_item_spec.rb
+++ b/spec/interactors/sbmt/outbox/create_outbox_item_spec.rb
@@ -1,23 +1,26 @@
 # frozen_string_literal: true
 
 describe Sbmt::Outbox::CreateOutboxItem do
-  subject(:result) { described_class.call(OutboxItem, attributes: attributes) }
+  subject(:result) { described_class.call(Combined::OutboxItem, attributes: attributes) }
 
   let(:attributes) do
     {
       payload: "test",
-      event_key: 10
+      event_key: 10,
+      event_name: "order_created"
     }
   end
 
   it "creates a record" do
-    expect { result }.to change(OutboxItem, :count).by(1)
+    expect { result }.to change(Combined::OutboxItem, :count).by(1)
     expect(result).to be_success
-    expect(result.value!).to have_attributes(bucket: 2)
+    expect(result.value!).to have_attributes(bucket: 1)
   end
 
   it "tracks Yabeda metrics" do
-    expect { result }.to update_yabeda_gauge(Yabeda.outbox.last_stored_event_id)
+    expect { result }
+      .to update_yabeda_gauge(Yabeda.outbox.last_stored_event_id).with_tags(name: "combined-outbox_item", type: :outbox, owner: nil, partition: 1)
+      .and increment_yabeda_counter(Yabeda.outbox.created_counter).with_tags(name: "combined-outbox_item", type: :outbox, owner: nil, partition: 1)
   end
 
   context "when got errors" do
@@ -26,24 +29,26 @@
     end
 
     it "does not track Yabeda metrics" do
-      expect { result }.not_to update_yabeda_gauge(Yabeda.outbox.last_stored_event_id)
+      expect { result }
+        .to not_update_yabeda_gauge(Yabeda.outbox.last_stored_event_id)
+        .and not_increment_yabeda_counter(Yabeda.outbox.created_counter)
     end
 
     it "returns errors" do
-      expect { result }.not_to change(OutboxItem, :count)
+      expect { result }.not_to change(Combined::OutboxItem, :count)
       expect(result).not_to be_success
     end
   end
 
   context "when partition by custom key" do
-    subject(:result) { described_class.call(InboxItem, attributes: attributes, partition_by: partition_by) }
+    subject(:result) { described_class.call(Combined::OutboxItem, attributes: attributes, partition_by: partition_by) }
 
     let(:partition_by) { 9 }
 
     it "creates a record" do
-      expect { result }.to change(InboxItem, :count).by(1)
+      expect { result }.to change(Combined::OutboxItem, :count).by(1)
       expect(result).to be_success
-      expect(result.value!).to have_attributes(bucket: 1)
+      expect(result.value!).to have_attributes(bucket: 3)
     end
   end
 end