diff --git a/spec/fixtures/cassettes/github_lastrelease.yml b/spec/fixtures/cassettes/github_lastrelease.yml
new file mode 100644
index 000000000..163e5bdea
--- /dev/null
+++ b/spec/fixtures/cassettes/github_lastrelease.yml
@@ -0,0 +1,93 @@
+---
+http_interactions:
+- request:
+    method: get
+    uri: https://api.github.com/repos/sgmap/tps/releases/latest
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      Accept:
+      - "*/*"
+      Accept-Encoding:
+      - gzip, deflate
+      User-Agent:
+      - rest-client/2.0.0 (darwin15.6.0 x86_64) ruby/2.3.1p112
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Thu, 15 Dec 2016 15:48:21 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 200 OK
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '46'
+      X-Ratelimit-Reset:
+      - '1481819650'
+      Cache-Control:
+      - public, max-age=60, s-maxage=60
+      Vary:
+      - Accept
+      - Accept-Encoding
+      Etag:
+      - W/"104562bed37a43b27f0e4ba70c1d2cff"
+      Last-Modified:
+      - Thu, 17 Nov 2016 10:56:47 GMT
+      X-Github-Media-Type:
+      - github.v3
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset,
+        X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - "*"
+      Content-Security-Policy:
+      - default-src 'none'
+      Strict-Transport-Security:
+      - max-age=31536000; includeSubdomains; preload
+      X-Content-Type-Options:
+      - nosniff
+      X-Frame-Options:
+      - deny
+      X-Xss-Protection:
+      - 1; mode=block
+      X-Served-By:
+      - 46808ddc41c302090177e58148908b23
+      Content-Encoding:
+      - gzip
+      X-Github-Request-Id:
+      - B918B84A:73B5:C61DB9:5852BB44
+    body:
+      encoding: ASCII-8BIT
+      string: !binary |-
+        H4sIAAAAAAAAA6VVy27bMBD8FUKXXBzTap4V0hZFeikQNIe0RdEHDFqiZQaU
+        yHJJt6mRf+nV3+Ef65BSnMTIA0ZPssTd4ezs7niRBaezIpt5b6ngXFg1rJWf
+        hcmwNA130hriVDfCcgTgXUtBkvj+4fHBwdFeNsgEkfQ0/i8Y3oEALVhtRLWB
+        1n2kbYj1iIs3rWjkQIuJ1NeAn/lGb4DfqfaBOr2o+TwfHg9jqarKir7wQYaT
+        cQSHeOsAL1wt/RjKNcormuGsEeSlQ3Ife4oz2XqhnCRmhWPlTDSWmPRMNKul
+        VsYJr0zLKsn0jvxtjfPxd2WIlHQ0BFTlxNRnxVRokmhA8DPjsmKRaVOrFnd+
+        uQz6fd4TzvdG+f7LwxEC5wIENzuVPt5oG0i60rQeDFP/A79JfzN/FSWoXY8S
+        tchiw54anwhHfE3nafXXYVOjtfmFzE2q92fzLjhf54BS91u19db5yFlw42cS
+        KoF6nJha0XPTfY9Iil/w+BirKiIQ9HVyc6Y3Fu0eRp8BKr9asFikNUxQYUKl
+        UzYOyDbq3MsDjnG1aNWfNGjb4CCPkJ5cYQtxUzzy5BxztU1il7Dg1qm5KK+i
+        BE6WUs0h59ZgG5nA8lc2ru8ntDqKq7wci6qJK5RW63qQWSd7y1uvW+mk8Lhf
+        YAOzF6P8cDfPd/Ojj/mo2DsuXoy+AsqGicb6Pxx1cFjsH8Wo3vSKbz+im7iJ
+        0Jve9Iwb90m3BvVH2e1R+qRblImprlDbyWzv9QcT5hIGs1rSCcf7d/e9PQm6
+        e2qVnp9aNtXhdzSpaHy9uTFJnjVCRS8RLcyNyJRqtWSrv9HyfgZEd85X7QS4
+        XWdvTExVsj6Li41yrFJUBhgoI7talmqqkBivYCBlAs5jMoVL6YeJG+9JnfCe
+        ZfoK5m/vmuvjxZzdWi6tPTeycUzDsEWJEq2oW4xAcHhnqyXEWVv3ajlk5y2z
+        MsC0IZpxkADm3tm4bNnpxecB+3J2Ef3+/N3FkL1DrTrQ4K5WqIy667x3ahI8
+        qCS5omo3ShFsugfGRc9Uf2pgQWVa90f7eBvTqToJNRraltKlBsbyUYwGlx3I
+        EAhlg5VDW2QyJPYzKNZKRjtiOlVgqzz+4AgY6e7UtgdoZtf/AIfUb6aECAAA
+    http_version: 
+  recorded_at: Thu, 15 Dec 2016 15:48:21 GMT
+recorded_with: VCR 3.0.3
diff --git a/spec/lib/github/api_spec.rb b/spec/lib/github/api_spec.rb
new file mode 100644
index 000000000..f605391cc
--- /dev/null
+++ b/spec/lib/github/api_spec.rb
@@ -0,0 +1,26 @@
+require 'spec_helper'
+
+describe Github::API do
+
+  describe '.base_uri' do
+    it { expect(described_class.base_uri).to eq 'https://api.github.com' }
+  end
+
+  describe '.latest_release' do
+    subject { described_class.latest_release }
+
+    context 'when github is up', vcr: {cassette_name: 'github_lastrelease'} do
+      it { expect(subject).to be_a RestClient::Response }
+      it { expect(subject.code).to eq 200 }
+    end
+
+    context 'when github is down' do
+
+      before do
+        allow_any_instance_of(RestClient::Resource).to receive(:get).and_raise(RestClient::Forbidden)
+      end
+
+      it { is_expected.to be_nil }
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/lib/github/releases_spec.rb b/spec/lib/github/releases_spec.rb
new file mode 100644
index 000000000..41bcfc049
--- /dev/null
+++ b/spec/lib/github/releases_spec.rb
@@ -0,0 +1,23 @@
+require 'spec_helper'
+
+describe Github::Releases do
+
+  describe '.latest' do
+
+    subject { described_class.latest }
+
+    context 'when github is up', vcr: {cassette_name: 'github_lastrelease'} do
+      it { expect(subject.url).to eq 'https://api.github.com/repos/sgmap/tps/releases/4685573' }
+      it { expect(subject.body).to match /.*[Nouveautés].*/ }
+      it { expect(subject.published_at).to match /[0-9][0-9][\/][0-9][0-9][\/][0-9][0-9][0-9][0-9]/ }
+    end
+
+    context 'when github is down' do
+      before do
+        allow_any_instance_of(RestClient::Resource).to receive(:get).and_raise(RestClient::Forbidden)
+      end
+
+      it { is_expected.to be_nil }
+    end
+  end
+end
\ No newline at end of file