diff --git a/CHANGELOG.md b/CHANGELOG.md
index eeeda9d68..c5f727586 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## Current Master
 
+## 3.9.2 2017-7-26
+
+- Fix bugs that could sometimes result in failed transactions after switching networks.
 - Include stack traces in txMeta's to better understand the life cycle of transactions
 
 ## 3.9.1 2017-7-19
diff --git a/app/manifest.json b/app/manifest.json
index eadd99590..55e1eb5b1 100644
--- a/app/manifest.json
+++ b/app/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "MetaMask",
   "short_name": "Metamask",
-  "version": "3.9.1",
+  "version": "3.9.2",
   "manifest_version": 2,
   "author": "https://metamask.io",
   "description": "Ethereum Browser Extension",
diff --git a/app/scripts/controllers/transactions.js b/app/scripts/controllers/transactions.js
index 8f53ffa8c..f71659042 100644
--- a/app/scripts/controllers/transactions.js
+++ b/app/scripts/controllers/transactions.js
@@ -24,7 +24,6 @@ module.exports = class TransactionController extends EventEmitter {
     this.blockTracker = opts.blockTracker
     this.nonceTracker = new NonceTracker({
       provider: this.provider,
-      blockTracker: this.provider._blockTracker,
       getPendingTransactions: (address) => {
         return this.getFilteredTxList({
           from: address,
diff --git a/app/scripts/lib/nonce-tracker.js b/app/scripts/lib/nonce-tracker.js
index c0746bd87..8328e81ec 100644
--- a/app/scripts/lib/nonce-tracker.js
+++ b/app/scripts/lib/nonce-tracker.js
@@ -4,8 +4,8 @@ const Mutex = require('await-semaphore').Mutex
 
 class NonceTracker {
 
-  constructor ({ blockTracker, provider, getPendingTransactions }) {
-    this.blockTracker = blockTracker
+  constructor ({ provider, getPendingTransactions }) {
+    this.provider = provider
     this.ethQuery = new EthQuery(provider)
     this.getPendingTransactions = getPendingTransactions
     this.lockMap = {}
@@ -39,16 +39,17 @@ class NonceTracker {
     assert(Number.isInteger(nextNonce), `nonce-tracker - nextNonce is not an integer - got: (${typeof nextNonce}) "${nextNonce}"`)
     // collect the numbers used to calculate the nonce for debugging
     const blockNumber = currentBlock.number
-    const nonceDetails = { blockNumber, baseCount, pendingCount }
+    const nonceDetails = { blockNumber, baseCount, baseCountHex, pendingCount }
     // return nonce and release cb
     return { nextNonce, nonceDetails, releaseLock }
   }
 
   async _getCurrentBlock () {
-    const currentBlock = this.blockTracker.getCurrentBlock()
+    const blockTracker = this._getBlockTracker()
+    const currentBlock = blockTracker.getCurrentBlock()
     if (currentBlock) return currentBlock
     return await Promise((reject, resolve) => {
-      this.blockTracker.once('latest', resolve)
+      blockTracker.once('latest', resolve)
     })
   }
 
@@ -82,6 +83,12 @@ class NonceTracker {
     return mutex
   }
 
+  // this is a hotfix for the fact that the blockTracker will
+  // change when the network changes
+  _getBlockTracker () {
+    return this.provider._blockTracker
+  }
+
 }
 
 module.exports = NonceTracker
diff --git a/test/unit/nonce-tracker-test.js b/test/unit/nonce-tracker-test.js
index 16cd6d008..b0283e159 100644
--- a/test/unit/nonce-tracker-test.js
+++ b/test/unit/nonce-tracker-test.js
@@ -18,11 +18,13 @@ describe('Nonce Tracker', function () {
 
 
     getPendingTransactions = () => pendingTxs
-    provider = { sendAsync: (_, cb) => { cb(undefined, {result: '0x0'}) } }
-    nonceTracker = new NonceTracker({
-      blockTracker: {
+    provider = {
+      sendAsync: (_, cb) => { cb(undefined, {result: '0x0'}) },
+      _blockTracker: {
         getCurrentBlock: () => '0x11b568',
       },
+    }
+    nonceTracker = new NonceTracker({
       provider,
       getPendingTransactions,
     })