diff --git a/.changeset/fast-mice-smash.md b/.changeset/fast-mice-smash.md
new file mode 100644
index 00000000..c84cc96f
--- /dev/null
+++ b/.changeset/fast-mice-smash.md
@@ -0,0 +1,5 @@
+---
+"@rgbpp-sdk/ckb": minor
+---
+
+feat: Increase the max length of RGB++ inputs to 40
diff --git a/packages/ckb/src/constants/index.ts b/packages/ckb/src/constants/index.ts
index 5430a88b..cf92757a 100644
--- a/packages/ckb/src/constants/index.ts
+++ b/packages/ckb/src/constants/index.ts
@@ -4,7 +4,7 @@ export const MIN_CAPACITY = BigInt(61) * BigInt(10000_0000);
 export const SECP256K1_WITNESS_LOCK_SIZE = 65;
 export const BTC_JUMP_CONFIRMATION_BLOCKS = 6;
 export const RGBPP_TX_WITNESS_MAX_SIZE = 5000;
-export const RGBPP_TX_INPUTS_MAX_LENGTH = 10;
+export const RGBPP_TX_INPUTS_MAX_LENGTH = 40;
 
 export const RGBPP_WITNESS_PLACEHOLDER = '0xFF';
 export const RGBPP_TX_ID_PLACEHOLDER = '0000000000000000000000000000000000000000000000000000000000000000';