diff --git a/types/big.js/index.d.ts b/types/big.js/index.d.ts
index cdc82df69ed4b4..10c6383e7a7e94 100644
--- a/types/big.js/index.d.ts
+++ b/types/big.js/index.d.ts
@@ -1,5 +1,5 @@
 declare namespace Big {
-    type BigSource = number | string | Big;
+    type BigSource = number | string | Big | bigint;
 
     /**
      * GT = 1, EQ = 0, LT = -1
diff --git a/types/big.js/package.json b/types/big.js/package.json
index 2e1f51d819d5b4..aed89495ac24e0 100644
--- a/types/big.js/package.json
+++ b/types/big.js/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@types/big.js",
-    "version": "6.2.9999",
+    "version": "7.0.9999",
     "projects": [
         "https://github.com/MikeMcl/big.js/"
     ],
diff --git a/types/big.js/test/big.js-import-default-tests.ts b/types/big.js/test/big.js-import-default-tests.ts
index 6a3640b3593ef9..0d0955f63068b5 100644
--- a/types/big.js/test/big.js-import-default-tests.ts
+++ b/types/big.js/test/big.js-import-default-tests.ts
@@ -355,6 +355,11 @@ function testMultipleConstructors() {
     y.div(3); // 1.6666666667
 }
 
+function bigintTests() {
+    const x: Big = new Big(123n);
+    Big(456n).plus(789n);
+}
+
 function multipleTypesAccepted(n: number | Big | string) {
     const y = Big(n).minus(n).mod(n).plus(n).times(n);
     y.cmp(n);
diff --git a/types/big.js/test/big.js-module-tests.ts b/types/big.js/test/big.js-module-tests.ts
index 749307aa490db2..883529bc2bd7a6 100644
--- a/types/big.js/test/big.js-module-tests.ts
+++ b/types/big.js/test/big.js-module-tests.ts
@@ -355,6 +355,11 @@ function testMultipleConstructors() {
     y.div(3); // 1.6666666667
 }
 
+function bigintTests() {
+    const x: Big = new Big(123n);
+    Big(456n).plus(789n);
+}
+
 function multipleTypesAccepted(n: number | Big | string) {
     const y = Big(n).minus(n).mod(n).plus(n).times(n);
     y.cmp(n);
diff --git a/types/office-js-preview/index.d.ts b/types/office-js-preview/index.d.ts
index 051b80ef078b61..6f922b01c83ac8 100644
--- a/types/office-js-preview/index.d.ts
+++ b/types/office-js-preview/index.d.ts
@@ -21512,7 +21512,7 @@ declare namespace Office {
     }
     /**
      * Specifies the behavior of an {@link https://learn.microsoft.com/office/dev/add-ins/outlook/encryption-decryption | encryption add-in} after it completes processing an
-     * {@link https://learn.microsoft.com/javascript/api/office/office.eventtype#fields | OnMessageRead} event.
+     * {@link https://learn.microsoft.com/office/dev/add-ins/develop/event-based-activation#outlook-events | OnMessageDecrypt} event.
      *
      * @remarks
      *
@@ -21527,7 +21527,7 @@ declare namespace Office {
     interface MessageDecryptEventCompletedOptions {
         /**
          * When you use the {@link https://learn.microsoft.com/javascript/api/outlook/office.mailboxevent#outlook-office-mailboxevent-completed-member(1) | completed method} to signal completion of an event handler,
-         * this value indicates if the `OnMessageRead` event should continue to run or be canceled. If the `allowEvent` property is set to `true`, the decrypted contents of the message is displayed.
+         * this value indicates if the `OnMessageDecrypt` event should continue to run or be canceled. If the `allowEvent` property is set to `true`, the decrypted contents of the message is displayed.
          *
          * @remarks
          *