diff --git a/Cargo.lock b/Cargo.lock
index f2b19a1c7..bb315db2b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8747,6 +8747,7 @@ dependencies = [
  "sp-genesis-builder",
  "sp-inherents",
  "sp-io",
+ "sp-metadata-ir",
  "sp-offchain",
  "sp-runtime",
  "sp-session",
@@ -13802,6 +13803,7 @@ dependencies = [
  "sp-genesis-builder",
  "sp-inherents",
  "sp-io",
+ "sp-metadata-ir",
  "sp-offchain",
  "sp-runtime",
  "sp-session",
diff --git a/Cargo.toml b/Cargo.toml
index 7d155d834..2b43d0d93 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -169,6 +169,7 @@ sp-core                                    = { git = "https://github.com/parityt
 sp-genesis-builder                         = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
 sp-inherents                               = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
 sp-io                                      = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
+sp-metadata-ir                             = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
 sp-offchain                                = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
 sp-runtime                                 = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
 sp-session                                 = { git = "https://github.com/paritytech/polkadot-sdk", default-features = false, branch = "release-crates-io-v1.7.0" }
diff --git a/runtimes/peregrine/Cargo.toml b/runtimes/peregrine/Cargo.toml
index 603a39fd9..570e6f900 100644
--- a/runtimes/peregrine/Cargo.toml
+++ b/runtimes/peregrine/Cargo.toml
@@ -59,6 +59,7 @@ sp-block-builder    = { workspace = true }
 sp-consensus-aura   = { workspace = true }
 sp-core             = { workspace = true }
 sp-inherents        = { workspace = true }
+sp-metadata-ir      = { workspace = true }
 sp-offchain         = { workspace = true }
 sp-runtime          = { workspace = true }
 sp-session          = { workspace = true }
@@ -241,6 +242,7 @@ std = [
   "sp-core/std",
   "sp-genesis-builder/std",
   "sp-inherents/std",
+  "sp-metadata-ir/std",
   "sp-offchain/std",
   "sp-runtime/std",
   "sp-session/std",
diff --git a/runtimes/peregrine/src/lib.rs b/runtimes/peregrine/src/lib.rs
index 37efef068..a88a685a5 100644
--- a/runtimes/peregrine/src/lib.rs
+++ b/runtimes/peregrine/src/lib.rs
@@ -54,6 +54,7 @@ mod migrations;
 pub use migrations::RuntimeMigrations;
 mod parachain;
 mod runtime_apis;
+use runtime_apis::_InternalImplRuntimeApis;
 pub use runtime_apis::{api, RuntimeApi};
 mod system;
 use sp_version::RuntimeVersion;
diff --git a/runtimes/peregrine/src/runtime_apis.rs b/runtimes/peregrine/src/runtime_apis.rs
index f9604f322..804f2a5e7 100644
--- a/runtimes/peregrine/src/runtime_apis.rs
+++ b/runtimes/peregrine/src/runtime_apis.rs
@@ -16,6 +16,7 @@ use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
 use sp_api::impl_runtime_apis;
 use sp_core::OpaqueMetadata;
 use sp_inherents::{CheckInherentsResult, InherentData};
+use sp_metadata_ir::RuntimeApiMetadataIR;
 use sp_runtime::{
 	traits::{Block as BlockT, TryConvert},
 	ApplyExtrinsicResult, KeyTypeId,
@@ -53,6 +54,22 @@ use crate::{
 // `impl_runtime_apis` is private.
 pub(crate) const RUNTIME_API_VERSION: ApisVec = RUNTIME_API_VERSIONS;
 
+// Workaround for runtime API impls not exposed in metadata if implemented in a
+// different file than the runtime's `lib.rs`. Related issue (subxt) -> https://github.com/paritytech/subxt/issues/1873.
+pub(crate) trait _InternalImplRuntimeApis {
+	fn runtime_metadata(&self) -> Vec<RuntimeApiMetadataIR>;
+}
+
+impl<T> _InternalImplRuntimeApis for T
+where
+	T: InternalImplRuntimeApis,
+{
+	#[inline(always)]
+	fn runtime_metadata(&self) -> Vec<RuntimeApiMetadataIR> {
+		<T as InternalImplRuntimeApis>::runtime_metadata(self)
+	}
+}
+
 impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {
diff --git a/runtimes/spiritnet/Cargo.toml b/runtimes/spiritnet/Cargo.toml
index 6e4c6fe5a..55a89d797 100644
--- a/runtimes/spiritnet/Cargo.toml
+++ b/runtimes/spiritnet/Cargo.toml
@@ -59,6 +59,7 @@ sp-block-builder    = { workspace = true }
 sp-consensus-aura   = { workspace = true }
 sp-core             = { workspace = true }
 sp-inherents        = { workspace = true }
+sp-metadata-ir      = { workspace = true }
 sp-offchain         = { workspace = true }
 sp-runtime          = { workspace = true }
 sp-session          = { workspace = true }
@@ -240,6 +241,7 @@ std = [
   "sp-core/std",
   "sp-genesis-builder/std",
   "sp-inherents/std",
+  "sp-metadata-ir/std",
   "sp-offchain/std",
   "sp-runtime/std",
   "sp-session/std",
diff --git a/runtimes/spiritnet/src/lib.rs b/runtimes/spiritnet/src/lib.rs
index 76821171d..18b00b4ff 100644
--- a/runtimes/spiritnet/src/lib.rs
+++ b/runtimes/spiritnet/src/lib.rs
@@ -54,6 +54,7 @@ mod migrations;
 pub use migrations::RuntimeMigrations;
 mod parachain;
 mod runtime_apis;
+use runtime_apis::_InternalImplRuntimeApis;
 pub use runtime_apis::{api, RuntimeApi};
 mod system;
 use sp_version::RuntimeVersion;
diff --git a/runtimes/spiritnet/src/runtime_apis.rs b/runtimes/spiritnet/src/runtime_apis.rs
index f9604f322..804f2a5e7 100644
--- a/runtimes/spiritnet/src/runtime_apis.rs
+++ b/runtimes/spiritnet/src/runtime_apis.rs
@@ -16,6 +16,7 @@ use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
 use sp_api::impl_runtime_apis;
 use sp_core::OpaqueMetadata;
 use sp_inherents::{CheckInherentsResult, InherentData};
+use sp_metadata_ir::RuntimeApiMetadataIR;
 use sp_runtime::{
 	traits::{Block as BlockT, TryConvert},
 	ApplyExtrinsicResult, KeyTypeId,
@@ -53,6 +54,22 @@ use crate::{
 // `impl_runtime_apis` is private.
 pub(crate) const RUNTIME_API_VERSION: ApisVec = RUNTIME_API_VERSIONS;
 
+// Workaround for runtime API impls not exposed in metadata if implemented in a
+// different file than the runtime's `lib.rs`. Related issue (subxt) -> https://github.com/paritytech/subxt/issues/1873.
+pub(crate) trait _InternalImplRuntimeApis {
+	fn runtime_metadata(&self) -> Vec<RuntimeApiMetadataIR>;
+}
+
+impl<T> _InternalImplRuntimeApis for T
+where
+	T: InternalImplRuntimeApis,
+{
+	#[inline(always)]
+	fn runtime_metadata(&self) -> Vec<RuntimeApiMetadataIR> {
+		<T as InternalImplRuntimeApis>::runtime_metadata(self)
+	}
+}
+
 impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {