diff --git a/src/herder/TxSetFrame.cpp b/src/herder/TxSetFrame.cpp
index 59187b8803..452d0dec1a 100644
--- a/src/herder/TxSetFrame.cpp
+++ b/src/herder/TxSetFrame.cpp
@@ -868,12 +868,18 @@ TxSetXDRFrame::makeEmpty(LedgerHeaderHistoryEntry const& lclHeader)
     if (protocolVersionStartsFrom(lclHeader.header.ledgerVersion,
                                   SOROBAN_PROTOCOL_VERSION))
     {
-        // Create only non-parallel phases for now. Later we'll need to add an
-        // empty Soroban parallel stage starting from the respective protocol
-        // version.
         std::vector<TxSetPhaseFrame> emptyPhases(
             static_cast<size_t>(TxSetPhase::PHASE_COUNT),
             TxSetPhaseFrame::makeEmpty(false));
+#ifdef ENABLE_NEXT_PROTOCOL_VERSION_UNSAFE_FOR_PRODUCTION
+        if (protocolVersionStartsFrom(lclHeader.header.ledgerVersion,
+                                      PARALLEL_SOROBAN_PHASE_PROTOCOL_VERSION))
+        {
+            emptyPhases[static_cast<size_t>(TxSetPhase::SOROBAN)] =
+                TxSetPhaseFrame::makeEmpty(true);
+        }
+#endif
+
         GeneralizedTransactionSet txSet;
         transactionsToGeneralizedTransactionSetXDR(emptyPhases, lclHeader.hash,
                                                    txSet);
diff --git a/src/herder/TxSetFrame.h b/src/herder/TxSetFrame.h
index 7a915bdf38..cf0e980684 100644
--- a/src/herder/TxSetFrame.h
+++ b/src/herder/TxSetFrame.h
@@ -56,7 +56,7 @@ makeTxSetFromTransactions(
 #ifdef BUILD_TESTS
     // Skips the tx set validation and preserves the pointers
     // to the passed-in transactions - use in conjunction with
-    // `orderOverride` argument in test-only overrides.
+    // `enforceTxsApplyOrder` argument in test-only overrides.
     ,
     bool skipValidation = false
 #endif
@@ -69,7 +69,7 @@ makeTxSetFromTransactions(
 #ifdef BUILD_TESTS
     // Skips the tx set validation and preserves the pointers
     // to the passed-in transactions - use in conjunction with
-    // `orderOverride` argument in test-only overrides.
+    // `enforceTxsApplyOrder` argument in test-only overrides.
     ,
     bool skipValidation = false
 #endif
diff --git a/src/herder/test/TestTxSetUtils.cpp b/src/herder/test/TestTxSetUtils.cpp
index 0b89267c09..2f3eb41698 100644
--- a/src/herder/test/TestTxSetUtils.cpp
+++ b/src/herder/test/TestTxSetUtils.cpp
@@ -41,12 +41,14 @@ makeGeneralizedTxSetXDR(std::vector<ComponentPhases> const& phases,
         releaseAssert(i < static_cast<size_t>(TxSetPhase::PHASE_COUNT));
         auto const& phase = phases[i];
         bool isParallelSorobanPhase = false;
+#ifdef ENABLE_NEXT_PROTOCOL_VERSION_UNSAFE_FOR_PRODUCTION
         if (useParallelSorobanPhase &&
             i == static_cast<size_t>(TxSetPhase::SOROBAN))
         {
             releaseAssert(phase.size() <= 1);
             isParallelSorobanPhase = true;
         }
+#endif
 
         auto normalizedTxsPerBaseFee = phase;
         std::sort(normalizedTxsPerBaseFee.begin(),
@@ -66,6 +68,7 @@ makeGeneralizedTxSetXDR(std::vector<ComponentPhases> const& phases,
         {
             if (isParallelSorobanPhase)
             {
+#ifdef ENABLE_NEXT_PROTOCOL_VERSION_UNSAFE_FOR_PRODUCTION
                 auto& component = xdrPhase.parallelTxsComponent();
                 if (baseFee)
                 {
@@ -81,6 +84,9 @@ makeGeneralizedTxSetXDR(std::vector<ComponentPhases> const& phases,
                         cluster.emplace_back(tx->getEnvelope());
                     }
                 }
+#else
+                releaseAssert(false);
+#endif
             }
             else
             {