diff --git a/decimal.d.ts b/decimal.d.ts
index 428089d..e036c50 100644
--- a/decimal.d.ts
+++ b/decimal.d.ts
@@ -64,6 +64,9 @@ export declare class Decimal {
   abs(): Decimal;
 
   ceil(): Decimal;
+  
+  clampedTo(min: Decimal.Value, max: Decimal.Value): Decimal;
+  clamp(min: Decimal.Value, max: Decimal.Value): Decimal;
 
   comparedTo(n: Decimal.Value): number;
   cmp(n: Decimal.Value): number;
@@ -239,6 +242,7 @@ export declare class Decimal {
   static atan2(y: Decimal.Value, x: Decimal.Value): Decimal;
   static cbrt(n: Decimal.Value): Decimal;
   static ceil(n: Decimal.Value): Decimal;
+  static clamp(n: Decimal.Value, min: Decimal.Value, max: Decimal.Value): Decimal;
   static clone(object?: Decimal.Config): Decimal.Constructor;
   static config(object: Decimal.Config): Decimal.Constructor;
   static cos(n: Decimal.Value): Decimal;
@@ -266,6 +270,7 @@ export declare class Decimal {
   static sinh(n: Decimal.Value): Decimal;
   static sqrt(n: Decimal.Value): Decimal;
   static sub(x: Decimal.Value, y: Decimal.Value): Decimal;
+  static sum(...n: Decimal.Value[]): Decimal;
   static tan(n: Decimal.Value): Decimal;
   static tanh(n: Decimal.Value): Decimal;
   static trunc(n: Decimal.Value): Decimal;
diff --git a/decimal.global.d.ts b/decimal.global.d.ts
index 0b0446b..5960a2d 100644
--- a/decimal.global.d.ts
+++ b/decimal.global.d.ts
@@ -85,6 +85,9 @@ export declare class Decimal {
   abs(): Decimal;
 
   ceil(): Decimal;
+  
+  clampedTo(min: Decimal.Value, max: Decimal.Value): Decimal;
+  clamp(min: Decimal.Value, max: Decimal.Value): Decimal;
 
   comparedTo(n: DecimalValue): number;
   cmp(n: DecimalValue): number;
@@ -260,6 +263,7 @@ export declare class Decimal {
   static atan2(y: DecimalValue, x: DecimalValue): Decimal;
   static cbrt(n: DecimalValue): Decimal;
   static ceil(n: DecimalValue): Decimal;
+  static clamp(n: Decimal.Value, min: Decimal.Value, max: Decimal.Value): Decimal;
   static clone(object?: DecimalConfig): DecimalConstructor;
   static config(object: DecimalConfig): DecimalConstructor;
   static cos(n: DecimalValue): Decimal;
@@ -287,6 +291,7 @@ export declare class Decimal {
   static sinh(n: DecimalValue): Decimal;
   static sqrt(n: DecimalValue): Decimal;
   static sub(x: DecimalValue, y: DecimalValue): Decimal;
+  static sum(...n: Decimal.Value[]): Decimal;
   static tan(n: DecimalValue): Decimal;
   static tanh(n: DecimalValue): Decimal;
   static trunc(n: DecimalValue): Decimal;