diff --git a/lib/modules/blockchain_connector/index.js b/lib/modules/blockchain_connector/index.js
index 4ea5e1430..eda9d2463 100644
--- a/lib/modules/blockchain_connector/index.js
+++ b/lib/modules/blockchain_connector/index.js
@@ -20,7 +20,6 @@ class BlockchainConnector {
     this.isDev = options.isDev;
     this.web3Endpoint = '';
     this.isWeb3Ready = false;
-    this.deployers = {};
 
     self.events.setCommandHandler("blockchain:web3:isReady", (cb) => {
       cb(self.isWeb3Ready);
@@ -233,29 +232,9 @@ class BlockchainConnector {
   }
 
   deployContractFromObject(deployContractObject, params, cb) {
-    let deployer = this.deployers[deployContractObject._deployData];
-
-    if (!deployer) {
-      deployer = {running: false, requested: []};
-      this.deployers[deployContractObject._deployData] = deployer;
-    }
-
-    if (deployer.running) {
-      deployer.requested.push({deployContractObject, params, cb});
-      return;
-    }
-
-    deployer.running = true;
     embarkJsUtils.secureSend(this.web3, deployContractObject, {
       from: params.from, gas: params.gas, gasPrice: params.gasPrice
-    }, true, (error, receipt) => {
-      deployer.running = false;
-      if (deployer.requested.length > 0) {
-        let request = deployer.requested.shift();
-        this.deployContractFromObject(request.deployContractObject, request.params, request.cb);
-      }
-      cb(error, receipt);
-    });
+    }, true, cb);
   }
 
   determineDefaultAccount(cb) {
diff --git a/lib/modules/deployment/contract_deployer.js b/lib/modules/deployment/contract_deployer.js
index 531b0be6a..384ecf7ac 100644
--- a/lib/modules/deployment/contract_deployer.js
+++ b/lib/modules/deployment/contract_deployer.js
@@ -257,7 +257,8 @@ class ContractDeployer {
             if (err) {
               return next(err);
             }
-            contract.gas = gasValue;
+            let increase_per = 1 + (Math.random() / 10.0);
+            contract.gas = Math.floor(gasValue * increase_per);
             next();
           });
         }
diff --git a/lib/modules/deployment/index.js b/lib/modules/deployment/index.js
index ebdd97eb9..2b046542c 100644
--- a/lib/modules/deployment/index.js
+++ b/lib/modules/deployment/index.js
@@ -82,7 +82,7 @@ class DeployManager {
             });
 
             try {
-              async.auto(contractDeploys, function(_err, _results) {
+              async.auto(contractDeploys, 1, function(_err, _results) {
                 if (errors.length) {
                   _err = __("Error deploying contracts. Please fix errors to continue.");
                   self.logger.error(_err);
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 0deffb49a..8898dd239 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -2915,9 +2915,9 @@
       }
     },
     "embarkjs": {
-      "version": "0.4.2",
-      "resolved": "https://registry.npmjs.org/embarkjs/-/embarkjs-0.4.2.tgz",
-      "integrity": "sha512-PSSs2WHxq8SkeHku56GZwRYsJDRjKYjRCQj7XItD/11lzlqSxOoymrnmZBkCGORBOil93n9MFhMMjsiAepEyVg==",
+      "version": "0.4.3",
+      "resolved": "https://registry.npmjs.org/embarkjs/-/embarkjs-0.4.3.tgz",
+      "integrity": "sha512-0y50RSywW3ehPR5lOd0t+p+Xq8ycjHVbHFLU+9PwaS2nBDi4JU/BF0JYly3hUZp0cQmkmfTJDsnub/Ys/95Mcg==",
       "requires": {
         "@babel/runtime-corejs2": "7.0.0-rc.1",
         "async": "2.6.1",
diff --git a/package.json b/package.json
index 2fec445d4..bc073259c 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "decompress": "4.2.0",
     "deep-equal": "1.0.1",
     "ejs": "2.6.1",
-    "embarkjs": "0.4.2",
+    "embarkjs": "0.4.3",
     "eth-ens-namehash": "2.0.8",
     "eth-lib": "0.2.8",
     "ethereumjs-wallet": "0.6.0",