diff --git a/sdk/src/main/kotlin/org/onflow/flow/sdk/models.kt b/sdk/src/main/kotlin/org/onflow/flow/sdk/models.kt
index 2fbdc75..88766e4 100644
--- a/sdk/src/main/kotlin/org/onflow/flow/sdk/models.kt
+++ b/sdk/src/main/kotlin/org/onflow/flow/sdk/models.kt
@@ -460,8 +460,7 @@ data class FlowTransaction(
         get() {
             return signerList
                 .withIndex()
-                .map { it.value to it.index }
-                .toMap()
+                .associate { it.value to it.index }
         }
 
     companion object {
@@ -612,7 +611,7 @@ data class FlowTransactionSignature(
         fun of(value: TransactionOuterClass.Transaction.Signature): FlowTransactionSignature =
             FlowTransactionSignature(
                 address = FlowAddress.of(value.address.toByteArray()),
-                signerIndex = value.keyId,
+                signerIndex = value.keyId ,
                 keyIndex = value.keyId,
                 signature = FlowSignature(value.signature.toByteArray())
             )
@@ -1468,6 +1467,14 @@ data class FlowNodeVersionInfo(
         .setProtocolVersion(protocolVersion)
         .setSporkRootBlockHeight(sporkRootBlockHeight)
         .setNodeRootBlockHeight(nodeRootBlockHeight)
+        .setCompatibleRange(
+            compatibleRange?.let {
+                NodeVersionInfoOuterClass.CompatibleRange.newBuilder()
+                    .setStartHeight(it.startHeight)
+                    .setEndHeight(it.endHeight)
+                    .build()
+            }
+        )
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true