diff --git a/circle.yml b/circle.yml
index 56f7efbe..a0da9bc0 100644
--- a/circle.yml
+++ b/circle.yml
@@ -6,8 +6,12 @@ dependencies:
   pre:
     - google-chrome --version
     - curl -L -o google-chrome.deb https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
+    - for v in $(curl http://archive.ubuntu.com/ubuntu/pool/main/n/nss/ | grep "href=" | grep "libnss3.*deb\"" -o | grep -o "libnss3.*deb" | grep "3.28" | grep "14.04"); do curl -L -o $v http://archive.ubuntu.com/ubuntu/pool/main/n/nss/$v; done && rm libnss3-tools*_i386.deb libnss3-dev*_i386.deb
     - sudo dpkg -i google-chrome.deb || true
+    - sudo dpkg -i libnss3*.deb || true
     - sudo apt-get update
+    - sudo apt-get install -f || true
+    - sudo dpkg -i libnss3*.deb
     - sudo apt-get install -f
     - sudo apt-get install --only-upgrade lsb-base
     - sudo dpkg -i google-chrome.deb
diff --git a/package.json b/package.json
index 7fefad6e..fd8633a9 100644
--- a/package.json
+++ b/package.json
@@ -43,38 +43,38 @@
     "aegir": "^11.0.2",
     "chai": "^4.1.2",
     "dirty-chai": "^2.0.1",
-    "ipfs": "^0.25.4",
+    "ipfs": "^0.26.0",
     "ipfs-block-service": "^0.12.0",
     "ipfs-repo": "^0.17.0",
     "ncp": "^2.0.0",
     "pre-commit": "^1.2.2",
     "pull-generate": "^2.2.0",
     "pull-zip": "^2.0.1",
-    "rimraf": "^2.6.1",
-    "sinon": "^3.2.1",
+    "rimraf": "^2.6.2",
+    "sinon": "^4.0.1",
     "split": "^1.0.1"
   },
   "dependencies": {
     "async": "^2.5.0",
     "bs58": "^4.0.1",
-    "cids": "^0.5.1",
+    "cids": "~0.5.2",
     "deep-extend": "^0.5.0",
     "ipfs-unixfs": "^0.1.13",
     "ipld-dag-pb": "^0.11.2",
-    "ipld-resolver": "^0.13.1",
+    "ipld-resolver": "^0.13.4",
     "left-pad": "^1.1.3",
     "lodash": "^4.17.4",
-    "multihashes": "^0.4.9",
-    "multihashing-async": "^0.4.6",
+    "multihashes": "~0.4.12",
+    "multihashing-async": "~0.4.7",
     "pull-batch": "^1.0.0",
-    "pull-block": "^1.2.0",
+    "pull-block": "1.2.0",
     "pull-cat": "^1.1.11",
     "pull-defer": "^0.2.2",
     "pull-pair": "^1.1.0",
     "pull-paramap": "^1.2.2",
     "pull-pause": "0.0.1",
     "pull-pushable": "^2.1.1",
-    "pull-stream": "^3.6.0",
+    "pull-stream": "^3.6.1",
     "pull-traverse": "^1.0.3",
     "pull-write": "^1.1.4",
     "sparse-array": "^1.3.1"
@@ -93,4 +93,4 @@
     "jbenet <juan@benet.ai>",
     "nginnever <ginneversource@gmail.com>"
   ]
-}
\ No newline at end of file
+}
diff --git a/test/test-builder.js b/test/test-builder.js
index 015a7b0c..08af7af3 100644
--- a/test/test-builder.js
+++ b/test/test-builder.js
@@ -18,13 +18,15 @@ module.exports = (repo) => {
   describe('builder', () => {
     let ipldResolver
 
+    const testMultihashes = Object.keys(mh.names).slice(0, 40)
+
     before(() => {
       const bs = new BlockService(repo)
       ipldResolver = new IPLDResolver(bs)
     })
 
     it('allows multihash hash algorithm to be specified', (done) => {
-      eachSeries(Object.keys(mh.names), (hashAlg, cb) => {
+      eachSeries(testMultihashes, (hashAlg, cb) => {
         const options = { hashAlg, strategy: 'flat' }
         const content = String(Math.random() + Date.now())
         const inputFile = {
@@ -59,7 +61,7 @@ module.exports = (repo) => {
     })
 
     it('allows multihash hash algorithm to be specified for big file', (done) => {
-      eachSeries(Object.keys(mh.names), (hashAlg, cb) => {
+      eachSeries(testMultihashes, (hashAlg, cb) => {
         const options = { hashAlg, strategy: 'flat' }
         const content = String(Math.random() + Date.now())
         const inputFile = {
diff --git a/test/test-fixed-size-chunker.js b/test/test-fixed-size-chunker.js
index 97a96efb..0fb8bbd7 100644
--- a/test/test-fixed-size-chunker.js
+++ b/test/test-fixed-size-chunker.js
@@ -12,9 +12,9 @@ const rawFile = loadFixture(__dirname, 'fixtures/1MiB.txt')
 
 describe('chunker: fixed size', () => {
   it('chunks non flat buffers', (done) => {
-    const b1 = new Buffer(2 * 256)
-    const b2 = new Buffer(1 * 256)
-    const b3 = new Buffer(5 * 256)
+    const b1 = Buffer.alloc(2 * 256)
+    const b2 = Buffer.alloc(1 * 256)
+    const b3 = Buffer.alloc(5 * 256)
 
     b1.fill('a')
     b2.fill('b')
@@ -36,7 +36,7 @@ describe('chunker: fixed size', () => {
 
   it('256 Bytes chunks', (done) => {
     pull(
-      pull.infinite(() => Buffer([1])),
+      pull.infinite(() => Buffer.from('a')),
       pull.take(256 * 12),
       chunker(256),
       pull.collect((err, chunks) => {
@@ -69,7 +69,7 @@ describe('chunker: fixed size', () => {
 
   it('256 KiB chunks of non scalar filesize', (done) => {
     const KiB256 = 262144
-    let file = Buffer.concat([rawFile, new Buffer('hello')])
+    let file = Buffer.concat([rawFile, Buffer.from('hello')])
 
     pull(
       pull.values(file),