diff --git a/rpc/rpc-api/src/test/java/com/strategyobject/substrateclient/rpc/api/SignedExtraTest.java b/rpc/rpc-api/src/test/java/com/strategyobject/substrateclient/rpc/api/SignedExtraTest.java
index c559410a..2a6e5a12 100644
--- a/rpc/rpc-api/src/test/java/com/strategyobject/substrateclient/rpc/api/SignedExtraTest.java
+++ b/rpc/rpc-api/src/test/java/com/strategyobject/substrateclient/rpc/api/SignedExtraTest.java
@@ -66,8 +66,8 @@ void testSignedExtra(boolean includeMetadataHash, String expectedHash) throws Ex
   @ParameterizedTest
   @CsvSource(
     {
-      "false,0xa90000000100000077000000000000000000000000000000000000000000000000000000000000777700000000000000000000000000000000000000000000000000000000000077",
-      "true,0xa9000000010000007700000000000000000000000000000000000000000000000000000000000077770000000000000000000000000000000000000000000000000000000000007700",
+      "false,0xb00000000100000077000000000000000000000000000000000000000000000000000000000000777700000000000000000000000000000000000000000000000000000000000077",
+      "true,0xb0000000010000007700000000000000000000000000000000000000000000000000000000000077770000000000000000000000000000000000000000000000000000000000007700",
     }
   )
   void testSignedExtraAdditional(boolean includeMetadataHash, String expectedHash) throws Exception {
diff --git a/tests/src/main/java/com/strategyobject/substrateclient/tests/containers/FrequencyVersion.java b/tests/src/main/java/com/strategyobject/substrateclient/tests/containers/FrequencyVersion.java
index 19bac82d..afcd8976 100644
--- a/tests/src/main/java/com/strategyobject/substrateclient/tests/containers/FrequencyVersion.java
+++ b/tests/src/main/java/com/strategyobject/substrateclient/tests/containers/FrequencyVersion.java
@@ -1,8 +1,8 @@
 package com.strategyobject.substrateclient.tests.containers;
 
 public class FrequencyVersion {
-    public static final String CURRENT_VERSION = "v1.17.2";
-    public static final Long SPEC = 169L;
+    public static final String CURRENT_VERSION = "v1.17.4";
+    public static final Long SPEC = 176L;
 
     private FrequencyVersion() {
     }