diff --git a/src/Polkadot/Extrinsic.cpp b/src/Polkadot/Extrinsic.cpp
index b88e5e9a843..dcd0b31a308 100644
--- a/src/Polkadot/Extrinsic.cpp
+++ b/src/Polkadot/Extrinsic.cpp
@@ -390,7 +390,7 @@ Data Extrinsic::encodeIdentityAddAuthorization(const Proto::Identity::AddAuthori
 
 static bool requires_new_spec_compatbility(uint32_t network, uint32_t specVersion) noexcept {
     // version 1002005 introduces a breaking change for Polkadot and Kusama
-    return ((network == 0 || network == 2) && specVersion >= 1002005);
+    return ((network == 0 || network == 2) && specVersion >= 1002005) || (network == 10 && specVersion >= 2270);
 }
 
 Data Extrinsic::encodePayload() const {
diff --git a/tests/chains/Acala/TWAnySignerTests.cpp b/tests/chains/Acala/TWAnySignerTests.cpp
index c69ada618f0..cf8cb5f1641 100644
--- a/tests/chains/Acala/TWAnySignerTests.cpp
+++ b/tests/chains/Acala/TWAnySignerTests.cpp
@@ -26,7 +26,7 @@ TEST(TWAnySignerAcala, Sign) {
     input.set_block_hash(blockHash.data(), blockHash.size());
 
     input.set_nonce(0);
-    input.set_spec_version(2170);
+    input.set_spec_version(2270);
     input.set_private_key(secret.data(), secret.size());
     input.set_network(10); // Acala
     input.set_transaction_version(2);
@@ -48,12 +48,12 @@ TEST(TWAnySignerAcala, Sign) {
 
     auto extrinsic = Extrinsic(input);
     auto preimage = extrinsic.encodePayload();
-    EXPECT_EQ(hex(preimage), "0a0000c8c602ded977c56076ae38d98026fa669ca10d6a2b5a0bfc4086ae7668ed1c60070010a5d4e8d50200007a08000002000000fc41b9bd8ef8fe53d58c7ea67c794c7ec9a73daf05e6d54b14ff6342c99ba64c707ffa05b7dc6cdb6356bd8bd51ff20b2757c3214a76277516080a10f1bc7537");
+    EXPECT_EQ(hex(preimage), "0a0000c8c602ded977c56076ae38d98026fa669ca10d6a2b5a0bfc4086ae7668ed1c60070010a5d4e8d502000000de08000002000000fc41b9bd8ef8fe53d58c7ea67c794c7ec9a73daf05e6d54b14ff6342c99ba64c707ffa05b7dc6cdb6356bd8bd51ff20b2757c3214a76277516080a10f1bc753700");
 
     Proto::SigningOutput output;
     ANY_SIGN(input, TWCoinTypePolkadot);
 
-    EXPECT_EQ(hex(output.encoded()), "41028400e9590e4d99264a14a85e21e69537e4a64f66a875d38cb8f76b305f41fabe24a900dd54466dffd1e3c80b76013e9459fbdcd17805bd5fdbca0961a643bad1cbd2b7fe005c62c51c18b67f31eb9e61b187a911952fee172ef18402d07c703eec3100d50200000a0000c8c602ded977c56076ae38d98026fa669ca10d6a2b5a0bfc4086ae7668ed1c60070010a5d4e8");
+    EXPECT_EQ(hex(output.encoded()), "45028400e9590e4d99264a14a85e21e69537e4a64f66a875d38cb8f76b305f41fabe24a900a9c3111fb98507f929e4da9aea30f996c69d2790e5a1e789f91634dc5d4f6afb155e0f1ea623498c04778f06dbc698109c3490c3e6b4c33d8e58ebab82a0f40bd5020000000a0000c8c602ded977c56076ae38d98026fa669ca10d6a2b5a0bfc4086ae7668ed1c60070010a5d4e8");
 }
 
 } // namespace TW::Polkadot::tests