diff --git a/rust/chains/tw_polkadot/src/entry.rs b/rust/chains/tw_polkadot/src/entry.rs
index 21d893761b8..c120fda2c31 100644
--- a/rust/chains/tw_polkadot/src/entry.rs
+++ b/rust/chains/tw_polkadot/src/entry.rs
@@ -21,6 +21,7 @@ use crate::call_encoder::CallEncoder;
 fn require_check_metadata(network_id: NetworkId, spec_version: u32) -> bool {
     match network_id {
         NetworkId::POLKADOT | NetworkId::KUSAMA if spec_version >= 1_002_005 => true,
+        NetworkId::ACALA if spec_version >= 2_270 => true,
         _ => false,
     }
 }
diff --git a/rust/tw_ss58_address/src/lib.rs b/rust/tw_ss58_address/src/lib.rs
index f61572669e8..8abab1ae02f 100644
--- a/rust/tw_ss58_address/src/lib.rs
+++ b/rust/tw_ss58_address/src/lib.rs
@@ -19,6 +19,7 @@ pub struct NetworkId(u16);
 impl NetworkId {
     pub const POLKADOT: Self = Self::new_unchecked(0);
     pub const KUSAMA: Self = Self::new_unchecked(2);
+    pub const ACALA: Self = Self::new_unchecked(10);
     pub const POLYMESH: Self = Self::new_unchecked(12);
     pub const GENERIC_SUBSTRATE: Self = Self::new_unchecked(42);
 }