diff --git a/Cargo.toml b/Cargo.toml
index 1005f88..fd5bfdc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -100,6 +100,7 @@ tokio = { version = "1.19", features = ["rt"] }
 default = [ "std", "polymesh_v7", "rpc", "serde", "v14" ]
 
 polymesh_v7 = []
+polymesh_v8 = []
 
 # Download the chain metadata from a RPC node.
 download_metadata = [
diff --git a/crates/polymesh-api-client-extras/Cargo.toml b/crates/polymesh-api-client-extras/Cargo.toml
index d43c5bc..7daf415 100644
--- a/crates/polymesh-api-client-extras/Cargo.toml
+++ b/crates/polymesh-api-client-extras/Cargo.toml
@@ -25,6 +25,8 @@ default = [ "std", "serde", "polymesh_v7" ]
 
 polymesh_v7 = ["polymesh-api/polymesh_v7"]
 
+polymesh_v8 = ["polymesh-api/polymesh_v8"]
+
 serde = [
   "polymesh-api/serde",
 ]
diff --git a/crates/polymesh-api-client-extras/src/user.rs b/crates/polymesh-api-client-extras/src/user.rs
index 1101e3a..9ef8e7b 100644
--- a/crates/polymesh-api-client-extras/src/user.rs
+++ b/crates/polymesh-api-client-extras/src/user.rs
@@ -185,6 +185,7 @@ impl PolymeshHelper {
     Ok(did)
   }
 
+  #[cfg(not(feature = "polymesh_v8"))]
   pub async fn get_account_info(
     &self,
     account: AccountId,
@@ -192,6 +193,14 @@ impl PolymeshHelper {
     Ok(self.api.query().system().account(account).await?)
   }
 
+  #[cfg(feature = "polymesh_v8")]
+  pub async fn get_account_info(
+    &self,
+    account: AccountId,
+  ) -> Result<AccountInfo<u32, AccountData<u128>>> {
+    Ok(self.api.query().system().account(account).await?)
+  }
+
   pub async fn get_account_balance(&self, account: AccountId) -> Result<u128> {
     self
       .get_account_info(account)
diff --git a/specs/polymesh_dev_spec_7003000.meta b/specs/polymesh_dev_spec_7003000.meta
new file mode 100644
index 0000000..329b20b
Binary files /dev/null and b/specs/polymesh_dev_spec_7003000.meta differ
diff --git a/src/lib.rs b/src/lib.rs
index d60f7b4..a39fbc5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,6 +4,10 @@ extern crate alloc;
 
 use polymesh_api_codegen_macro::*;
 
+#[cfg_attr(
+  all(not(feature = "download_metadata"), feature = "polymesh_v8"),
+  codegen_api(metadata_file = "specs/polymesh_dev_spec_7003000.meta")
+)]
 #[cfg_attr(
   all(not(feature = "download_metadata"), feature = "polymesh_v7"),
   codegen_api(metadata_file = "specs/polymesh_dev_spec_7000005.meta")