diff --git a/token/js/src/extensions/tokenGroup/actions.ts b/token/js/src/extensions/tokenGroup/actions.ts
index 8fd56066c10..318c49fe8fe 100644
--- a/token/js/src/extensions/tokenGroup/actions.ts
+++ b/token/js/src/extensions/tokenGroup/actions.ts
@@ -35,7 +35,7 @@ export async function tokenGroupInitializeGroup(
     mint: PublicKey,
     mintAuthority: PublicKey | Signer,
     updateAuthority: PublicKey | null,
-    maxSize: number,
+    maxSize: bigint,
     multiSigners: Signer[] = [],
     confirmOptions?: ConfirmOptions,
     programId = TOKEN_2022_PROGRAM_ID,
@@ -79,7 +79,7 @@ export async function tokenGroupInitializeGroupWithRentTransfer(
     mint: PublicKey,
     mintAuthority: PublicKey | Signer,
     updateAuthority: PublicKey | null,
-    maxSize: number,
+    maxSize: bigint,
     multiSigners: Signer[] = [],
     confirmOptions?: ConfirmOptions,
     programId = TOKEN_2022_PROGRAM_ID,
@@ -126,7 +126,7 @@ export async function tokenGroupUpdateGroupMaxSize(
     payer: Signer,
     mint: PublicKey,
     updateAuthority: PublicKey | Signer,
-    maxSize: number,
+    maxSize: bigint,
     multiSigners: Signer[] = [],
     confirmOptions?: ConfirmOptions,
     programId = TOKEN_2022_PROGRAM_ID,
diff --git a/token/js/test/e2e-2022/tokenGroup.test.ts b/token/js/test/e2e-2022/tokenGroup.test.ts
index 3b85a570564..45dd9713382 100644
--- a/token/js/test/e2e-2022/tokenGroup.test.ts
+++ b/token/js/test/e2e-2022/tokenGroup.test.ts
@@ -76,8 +76,8 @@ describe('tokenGroup', async () => {
         const tokenGroup = {
             updateAuthority: updateAuthority.publicKey,
             mint: mint.publicKey,
-            size: 0,
-            maxSize: 10,
+            size: BigInt(0),
+            maxSize: BigInt(10),
         };
 
         // Transfer the required amount for rent exemption
@@ -112,8 +112,8 @@ describe('tokenGroup', async () => {
         const tokenGroup = {
             updateAuthority: updateAuthority.publicKey,
             mint: mint.publicKey,
-            size: 0,
-            maxSize: 10,
+            size: BigInt(0),
+            maxSize: BigInt(10),
         };
 
         await tokenGroupInitializeGroupWithRentTransfer(
@@ -137,8 +137,8 @@ describe('tokenGroup', async () => {
         const tokenGroup = {
             updateAuthority: updateAuthority.publicKey,
             mint: mint.publicKey,
-            size: 0,
-            maxSize: 10,
+            size: BigInt(0),
+            maxSize: BigInt(10),
         };
 
         // Transfer the required amount for rent exemption
@@ -169,7 +169,7 @@ describe('tokenGroup', async () => {
             payer,
             mint.publicKey,
             updateAuthority.publicKey,
-            20,
+            BigInt(20),
             [updateAuthority],
             undefined,
             TEST_PROGRAM_ID,
@@ -180,8 +180,8 @@ describe('tokenGroup', async () => {
         expect(group).to.deep.equal({
             updateAuthority: updateAuthority.publicKey,
             mint: mint.publicKey,
-            size: 0,
-            maxSize: 20,
+            size: BigInt(0),
+            maxSize: BigInt(20),
         });
     });
 
@@ -189,8 +189,8 @@ describe('tokenGroup', async () => {
         const tokenGroup = {
             updateAuthority: updateAuthority.publicKey,
             mint: mint.publicKey,
-            size: 0,
-            maxSize: 10,
+            size: BigInt(0),
+            maxSize: BigInt(10),
         };
 
         // Transfer the required amount for rent exemption
diff --git a/token/js/test/e2e-2022/tokenGroupMember.test.ts b/token/js/test/e2e-2022/tokenGroupMember.test.ts
index 727a5a8623b..ddcf01b6123 100644
--- a/token/js/test/e2e-2022/tokenGroupMember.test.ts
+++ b/token/js/test/e2e-2022/tokenGroupMember.test.ts
@@ -83,7 +83,7 @@ describe('tokenGroupMember', async () => {
             groupMint.publicKey,
             groupMintAuthority.publicKey,
             groupUpdateAuthority.publicKey,
-            3,
+            BigInt(3),
             [payer, groupMintAuthority],
             undefined,
             TEST_PROGRAM_ID,