diff --git a/p8e-api/src/main/kotlin/io/provenance/engine/config/Properties.kt b/p8e-api/src/main/kotlin/io/provenance/engine/config/Properties.kt
index f3ca043..d9dbb6c 100644
--- a/p8e-api/src/main/kotlin/io/provenance/engine/config/Properties.kt
+++ b/p8e-api/src/main/kotlin/io/provenance/engine/config/Properties.kt
@@ -54,6 +54,7 @@ class ChaincodeProperties {
     @NotNull var mainNet: Boolean = false
     @NotNull var emptyIterationBackoffMS: Int = 1_000
     @NotNull var txBatchSize: Int = 25
+    @NotNull var specTxBatchSize: Int = 10
     @NotNull var gasMultiplier: Double = 1.0
     @NotNull var maxGasMultiplierPerDay: Int = 1000
     @NotNull var blockHeightTimeoutInterval: Int = 20
diff --git a/p8e-api/src/main/kotlin/io/provenance/engine/service/ChaincodeInvokeService.kt b/p8e-api/src/main/kotlin/io/provenance/engine/service/ChaincodeInvokeService.kt
index 4284416..c96acae 100644
--- a/p8e-api/src/main/kotlin/io/provenance/engine/service/ChaincodeInvokeService.kt
+++ b/p8e-api/src/main/kotlin/io/provenance/engine/service/ChaincodeInvokeService.kt
@@ -212,9 +212,7 @@ class ChaincodeInvokeService(
                 val txBody = batch.map {
                     it.attempts++
                     it.request
-                }.toTxBody().toBuilder()
-                    .setTimeoutHeight(currentBlockHeight + chaincodeProperties.blockHeightTimeoutInterval)
-                .build()
+                }.toTxBody(currentBlockHeight + chaincodeProperties.blockHeightTimeoutInterval)
 
                 // Send the transactions to the blockchain.
                 val resp = synchronized(provenanceGrpc) { batchTx(txBody) }
@@ -433,15 +431,18 @@ class ChaincodeInvokeService(
                     .addAllSigners(owners)
                     .build()
             }
-            val txBody = contractSpecTx.plus(scopeSpecTx).toTxBody()
+            contractSpecTx.plus(scopeSpecTx).chunked(chaincodeProperties.specTxBatchSize).forEach { messages ->
+                log.info("sending batch of ${messages.size} contract spec messages")
+                val txBody = messages.toTxBody(provenanceGrpc.getLatestBlock().block.header.height + chaincodeProperties.blockHeightTimeoutInterval)
+
+                synchronized(provenanceGrpc) {
+                    batchTx(txBody, applyMultiplier = false).also {
+                        if (it.txResponse.code != 0) {
+                            throw Exception("Error adding contract spec: ${it.txResponse.rawLog}")
+                        }
 
-            synchronized(provenanceGrpc) {
-                batchTx(txBody, applyMultiplier = false).also {
-                    if (it.txResponse.code != 0) {
-                        throw Exception("Error adding contract spec: ${it.txResponse.rawLog}")
+                        log.info("contract spec batch made it to mempool with txhash = ${it.txResponse.txhash}")
                     }
-
-                    log.info("batch made it to mempool with txhash = ${it.txResponse.txhash}")
                 }
             }
         } catch(e: Throwable) {
diff --git a/p8e-api/src/main/kotlin/io/provenance/engine/service/ProvenanceGrpcService.kt b/p8e-api/src/main/kotlin/io/provenance/engine/service/ProvenanceGrpcService.kt
index bd011aa..f19a017 100644
--- a/p8e-api/src/main/kotlin/io/provenance/engine/service/ProvenanceGrpcService.kt
+++ b/p8e-api/src/main/kotlin/io/provenance/engine/service/ProvenanceGrpcService.kt
@@ -207,8 +207,13 @@ class ProvenanceGrpcService(
         ).scopeSpecification.specification
 }
 
-fun Collection<Message>.toTxBody(): TxBody = TxBody.newBuilder()
+fun Collection<Message>.toTxBody(timeoutHeight: Long? = null): TxBody = TxBody.newBuilder()
     .addAllMessages(map { it.toAny() })
+    .also {
+        if (timeoutHeight != null) {
+            it.setTimeoutHeight(timeoutHeight)
+        }
+    }
     .build()
 
 fun Message.toTxBody(): TxBody = listOf(this).toTxBody()
diff --git a/p8e-api/src/main/resources/application-container.properties b/p8e-api/src/main/resources/application-container.properties
index 32aa8f8..c80b483 100644
--- a/p8e-api/src/main/resources/application-container.properties
+++ b/p8e-api/src/main/resources/application-container.properties
@@ -44,6 +44,7 @@ chaincode.chainId=${CHAINCODE_CHAIN_ID}
 chaincode.mnemonic=${CHAINCODE_MNEMONIC}
 chaincode.emptyIterationBackoffMS=${CHAINCODE_EMPTY_ITERATION_BACKOFF:750}
 chaincode.txBatchSize=${CHAINCODE_TX_BATCH_SIZE:25}
+chaincode.specTxBatchSize=${CHAINCODE_SPEC_TX_BATCH_SIZE:10}
 chaincode.gasMultiplier=${CHAINCODE_GAS_MULTIPLIER:1.0}
 chaincode.maxGasMultiplierPerDay=${CHAINCODE_MAX_GAS_MULTIPLIER_PER_DAY:1000}
 chaincode.blockHeightTimeoutInterval=${CHAINCODE_BLOCK_HEIGHT_TIMEOUT_INTERVAL:20}
diff --git a/p8e-api/src/main/resources/application-local.properties b/p8e-api/src/main/resources/application-local.properties
index 34818ed..ea3c348 100644
--- a/p8e-api/src/main/resources/application-local.properties
+++ b/p8e-api/src/main/resources/application-local.properties
@@ -39,6 +39,7 @@ chaincode.chainId=chain-local
 chaincode.mnemonic=${CHAINCODE_MNEMONIC}
 chaincode.emptyIterationBackoffMS=750
 chaincode.txBatchSize=25
+chaincode.specTxBatchSize=25
 
 # Elasticsearch
 elasticsearch.host=localhost