diff --git a/.changeset/clean-eggs-kiss.md b/.changeset/clean-eggs-kiss.md
new file mode 100644
index 00000000..d44223fd
--- /dev/null
+++ b/.changeset/clean-eggs-kiss.md
@@ -0,0 +1,5 @@
+---
+"@soundxyz/sound-protocol": minor
+---
+
+Update v2.1 interfaceIds
diff --git a/src/interfaceIds.ts b/src/interfaceIds.ts
index 18ded6fc..63442b13 100644
--- a/src/interfaceIds.ts
+++ b/src/interfaceIds.ts
@@ -12,7 +12,7 @@ export const interfaceIds = {
     IEditionMaxMinterV2: "0x6ee3f258",
     IRangeEditionMinterV2: "0x84435ae5",
     ISoundEditionV2: "0x7888cfe1",
-    ISoundEditionV2_1: "0x7888cfe1",
+    ISoundEditionV2_1: "0x8477f7b3",
     ISuperMinter: "0x1459ad68",
     ISuperMinterV2: "0x75dd7850",
 } as const;
diff --git a/src/json/interfaceIds.json b/src/json/interfaceIds.json
index 4ff54cae..5120286e 100644
--- a/src/json/interfaceIds.json
+++ b/src/json/interfaceIds.json
@@ -1 +1 @@
-{"ISoundEditionV1":"0x50899e54","ISoundEditionV1_2":"0xa176eca6","IMinterModule":"0x37c74bd8","IFixedPriceSignatureMinter":"0xa61bd96f","IMerkleDropMinter":"0x89691c4c","IEditionMaxMinter":"0xa7ea8688","IRangeEditionMinter":"0x4d4a2e35","IMinterModuleV2":"0xf8ccd08e","IFixedPriceSignatureMinterV2":"0x0f713f15","IMerkleDropMinterV2":"0x5e9a2e5f","IEditionMaxMinterV2":"0x6ee3f258","IRangeEditionMinterV2":"0x84435ae5","ISoundEditionV2":"0x7888cfe1","ISoundEditionV2_1":"0x7888cfe1","ISuperMinter":"0x1459ad68","ISuperMinterV2":"0x75dd7850"}
\ No newline at end of file
+{"ISoundEditionV1":"0x50899e54","ISoundEditionV1_2":"0xa176eca6","IMinterModule":"0x37c74bd8","IFixedPriceSignatureMinter":"0xa61bd96f","IMerkleDropMinter":"0x89691c4c","IEditionMaxMinter":"0xa7ea8688","IRangeEditionMinter":"0x4d4a2e35","IMinterModuleV2":"0xf8ccd08e","IFixedPriceSignatureMinterV2":"0x0f713f15","IMerkleDropMinterV2":"0x5e9a2e5f","IEditionMaxMinterV2":"0x6ee3f258","IRangeEditionMinterV2":"0x84435ae5","ISoundEditionV2":"0x7888cfe1","ISoundEditionV2_1":"0x8477f7b3","ISuperMinter":"0x1459ad68","ISuperMinterV2":"0x75dd7850"}
\ No newline at end of file