diff --git a/src/errors.h b/src/errors.h
index 5dccc63..18d3f0c 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -3585,8 +3585,38 @@
 	INIT(= N_("E1412: Builtin object method \"%s\" not supported"));
 EXTERN char e_builtin_class_method_not_supported[]
 	INIT(= N_("E1413: Builtin class method not supported"));
+EXTERN char e_enum_can_only_be_defined_in_vim9_script[]
+       INIT(= N_("E1414: Enum can only be defined in Vim9 script"));
+EXTERN char e_enum_name_must_start_with_uppercase_letter_str[]
+	INIT(= N_("E1415: Enum name must start with an uppercase letter: %s"));
+EXTERN char e_enum_cannot_extend_class[]
+	INIT(= N_("E1416: Enum cannot extend a class or enum"));
+EXTERN char e_abstract_cannot_be_used_in_enum[]
+	INIT(= N_("E1417: Abstract cannot be used in an Enum"));
+EXTERN char e_invalid_enum_value_declaration_str[]
+	INIT(= N_("E1418: Invalid enum value declaration: %s"));
+EXTERN char e_not_valid_command_in_enum_str[]
+	INIT(= N_("E1419: Not a valid command in an Enum: %s"));
+EXTERN char e_missing_endenum[]
+	INIT(= N_("E1420: Missing :endenum"));
+EXTERN char e_using_enum_as_value_str[]
+	INIT(= N_("E1421: Enum \"%s\" cannot be used as a value"));
+EXTERN char e_enum_value_str_not_found_in_enum_str[]
+	INIT(= N_("E1422: Enum value \"%s\" not found in enum \"%s\""));
+EXTERN char e_enumvalue_str_cannot_be_modified[]
+	INIT(= N_("E1423: Enum value \"%s.%s\" cannot be modified"));
+EXTERN char e_using_enum_str_as_number[]
+	INIT(= N_("E1424: Using an Enum \"%s\" as a Number"));
+EXTERN char e_using_enum_str_as_string[]
+	INIT(= N_("E1425: Using an Enum \"%s\" as a String"));
+EXTERN char e_enum_str_ordinal_cannot_be_modified[]
+	INIT(= N_("E1426: Enum \"%s\" ordinal value cannot be modified"));
+EXTERN char e_enum_str_name_cannot_be_modified[]
+	INIT(= N_("E1427: Enum \"%s\" name cannot be modified"));
+EXTERN char e_duplicate_enum_str[]
+	INIT(= N_("E1428: Duplicate enum value: %s"));
 #endif
-// E1415 - E1499 unused (reserved for Vim9 class support)
+// E1429 - E1499 unused (reserved for Vim9 class support)
 EXTERN char e_cannot_mix_positional_and_non_positional_str[]
 	INIT(= N_("E1500: Cannot mix positional and non-positional arguments: %s"));
 EXTERN char e_fmt_arg_nr_unused_str[]