diff --git a/packages/calcite-components/src/components/combobox/assets/t9n/messages.en.json b/packages/calcite-components/src/components/combobox/assets/t9n/messages.en.json
index 9c98490d937..fe9614a2b94 100644
--- a/packages/calcite-components/src/components/combobox/assets/t9n/messages.en.json
+++ b/packages/calcite-components/src/components/combobox/assets/t9n/messages.en.json
@@ -1,8 +1,10 @@
 {
+  "add": "Add",
   "all": "All",
   "allSelected": "All selected",
-  "selectAll": "Select All",
   "clear": "Clear value",
+  "noMatches": "No matches",
   "removeTag": "Remove tag",
+  "selectAll": "Select all",
   "selected": "selected"
 }
diff --git a/packages/calcite-components/src/components/combobox/assets/t9n/messages.json b/packages/calcite-components/src/components/combobox/assets/t9n/messages.json
index 9c98490d937..fe9614a2b94 100644
--- a/packages/calcite-components/src/components/combobox/assets/t9n/messages.json
+++ b/packages/calcite-components/src/components/combobox/assets/t9n/messages.json
@@ -1,8 +1,10 @@
 {
+  "add": "Add",
   "all": "All",
   "allSelected": "All selected",
-  "selectAll": "Select All",
   "clear": "Clear value",
+  "noMatches": "No matches",
   "removeTag": "Remove tag",
+  "selectAll": "Select all",
   "selected": "selected"
 }