diff --git a/client/src/client_sync/v23/blockchain.rs b/client/src/client_sync/v23/blockchain.rs
index 0d7c004..e7855ec 100644
--- a/client/src/client_sync/v23/blockchain.rs
+++ b/client/src/client_sync/v23/blockchain.rs
@@ -8,6 +8,7 @@
 //! All macros require `Client` to be in scope.
 //!
 //! See or use the `define_jsonrpc_minreq_client!` macro to define a `Client`.
+
 /// Implements Bitcoin Core JSON-RPC API method `savemempool`
 #[macro_export]
 macro_rules! impl_client_v23__savemempool {
diff --git a/integration_test/tests/blockchain.rs b/integration_test/tests/blockchain.rs
index 36f8c32..7d4a010 100644
--- a/integration_test/tests/blockchain.rs
+++ b/integration_test/tests/blockchain.rs
@@ -283,24 +283,24 @@ fn blockchain__savemempool() {
     let (_addr, _txid) = node.create_mempool_transaction();
 
     #[cfg(any(
-        feature = "0_17_2",
-        feature = "0_18_1",
-        feature = "0_19_1",
-        feature = "0_20_2",
-        feature = "0_21_2",
-        feature = "22_1"
+        feature = "v17",
+        feature = "v18",
+        feature = "v19",
+        feature = "v20",
+        feature = "v21",
+        feature = "v22",
     ))]
     {
         node.client.save_mempool().expect("savemempool");
     }
 
     #[cfg(not(any(
-        feature = "0_17_2",
-        feature = "0_18_1",
-        feature = "0_19_1",
-        feature = "0_20_2",
-        feature = "0_21_2",
-        feature = "22_1"
+        feature = "v17",
+        feature = "v18",
+        feature = "v19",
+        feature = "v20",
+        feature = "v21",
+        feature = "v22",
     )))]
     {
         let _: Result<SaveMempool, _> = node.client.save_mempool();
diff --git a/types/src/v23/blockchain.rs b/types/src/v23/blockchain.rs
index 284df8d..8735bbc 100644
--- a/types/src/v23/blockchain.rs
+++ b/types/src/v23/blockchain.rs
@@ -3,6 +3,7 @@
 //! The JSON-RPC API for Bitcoin Core `v23` - blockchain.
 //!
 //! Types for methods found under the `== Blockchain ==` section of the API docs.
+
 use serde::{Deserialize, Serialize};
 
 /// Result of JSON-RPC method `savemempool`.