diff --git a/manifest.toml b/manifest.toml
index e3821c08..5e4edcbf 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -22,3 +22,4 @@ legacy_product_codes = [
     { value = "4C74F840-7F3C-475A-8D98-3ABB7A5D9B1C", kind = "nsis" },
     { value = "0B7DDC57-C32C-4A23-95DB-A69D70159423", kind = "nsis" }
 ]
+extra_locales = { hdn-CA = "hdn" }
diff --git a/manifest.toml.in b/manifest.toml.in
index 486e402f..e10050ad 100644
--- a/manifest.toml.in
+++ b/manifest.toml.in
@@ -22,3 +22,4 @@ legacy_product_codes = [
     { value = "4C74F840-7F3C-475A-8D98-3ABB7A5D9B1C", kind = "nsis" },
     { value = "0B7DDC57-C32C-4A23-95DB-A69D70159423", kind = "nsis" }
 ]
+extra_locales = { hdn-CA = "hdn" }