diff --git a/decimal.d.ts b/decimal.d.ts
index 0fbc7b2..338dc56 100644
--- a/decimal.d.ts
+++ b/decimal.d.ts
@@ -297,3 +297,5 @@ export declare class Decimal {
   static readonly ROUND_HALF_FLOOR: 8;
   static readonly EUCLID: 9;
 }
+
+export declare function Decimal(n: Decimal.Value): Decimal;
diff --git a/decimal.global.d.ts b/decimal.global.d.ts
index 6b28256..ddc5109 100644
--- a/decimal.global.d.ts
+++ b/decimal.global.d.ts
@@ -318,3 +318,5 @@ export declare class Decimal {
   static readonly ROUND_HALF_FLOOR: 8;
   static readonly EUCLID: 9;
 }
+
+export declare function Decimal(n: Decimal.Value): Decimal;