diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index 308af721af625..f03efce6dfe95 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -1438,6 +1438,11 @@ type Record<K extends keyof any, T> = {
  */
 type Exclude<T, U> = T extends U ? never : T;
 
+/**
+ * Omit from T the properties whose keys are in U
+ */
+type Omit<T, U extends keyof T> = Pick<T, Exclude<keyof T, U>>;
+
 /**
  * Extract from T those types that are assignable to U
  */