diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 564d4fab..e7344758 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -32,14 +32,15 @@ jobs:
 
       - name: Prepare Hiero Solo
         id: solo
-        uses: hiero-ledger/hiero-solo-action@a39acf8cfbaa2feb195a86530d0ab643a45aa541 # v0.10
+        uses: hiero-ledger/hiero-solo-action@6a1a77601cf3e69661fb6880530a4edf656b40d5 # v0.14.0
         with:
           installMirrorNode: true
-          hieroVersion: v0.63.7
-          mirrorNodeVersion: v0.133.0
+          hieroVersion: v0.66.0
+          mirrorNodeVersion: v0.138.0
           mirrorNodePortRest: 5551
           mirrorNodePortGrpc: 5600
           mirrorNodePortWeb3Rest: 8545
+          soloVersion: 0.46.1
 
       - name: Wait for Mirror Node
         run: |
diff --git a/hiero-enterprise-base/src/test/java/com/openelements/hiero/base/test/config/SoloActionNetworkSettings.java b/hiero-enterprise-base/src/test/java/com/openelements/hiero/base/test/config/SoloActionNetworkSettings.java
index f63b7384..cc7e5092 100644
--- a/hiero-enterprise-base/src/test/java/com/openelements/hiero/base/test/config/SoloActionNetworkSettings.java
+++ b/hiero-enterprise-base/src/test/java/com/openelements/hiero/base/test/config/SoloActionNetworkSettings.java
@@ -21,7 +21,7 @@ public class SoloActionNetworkSettings implements NetworkSettings {
 
     @Override
     public @NonNull Set<String> getMirrorNodeAddresses() {
-        return Set.of("http://localhost:8080");
+        return Set.of("http://localhost:5551");
     }
 
     @Override
@@ -36,6 +36,6 @@ public class SoloActionNetworkSettings implements NetworkSettings {
 
     @Override
     public @NonNull Optional<String> relayUrl() {
-        return Optional.empty();
+        return Optional.of("http://localhost:7546"); // JSON-RPC-Relay port from hiero-solo-action
     }
 }