diff --git a/.travis.yml b/.travis.yml
index 63207487..f18da476 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,9 +13,9 @@ env:
     - LOCAL_DOMAIN=cb6e6126.ngrok.io
     - LOCAL_HTTPS=true
     - RAILS_ENV=test
-    - CXX=g++-4.8
     - NOKOGIRI_USE_SYSTEM_LIBRARIES=true
     - PARALLEL_TEST_PROCESSORS=2
+    - "PATH=$HOME:$PATH"
 
 addons:
   postgresql: 9.4
@@ -24,8 +24,10 @@ addons:
     - ubuntu-toolchain-r-test
     - trusty-media
     packages:
-    - g++-4.8
     - ffmpeg
+    - g++-6
+    - libprotobuf-dev
+    - protobuf-compiler
 
 rvm:
   - 2.3.4
@@ -43,6 +45,7 @@ install:
 before_script:
   - bundle exec rake parallel:create parallel:load_schema parallel:prepare
   - bundle exec rails assets:precompile
+  - ln -s /usr/bin/x86_64-linux-gnu-g++-6 "$HOME/g++"
 
 script:
   - bundle exec parallel_test spec/ --group-by filesize --type rspec
diff --git a/Dockerfile b/Dockerfile
index 3e472725..e2926725 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,8 @@ RUN echo "@edge https://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/reposit
     libxml2-dev \
     libxslt-dev \
     python \
-    build-base" \
+    build-base \
+    protobuf-dev" \
  && apk -U upgrade && apk add \
     $BUILD_DEPS \
     nodejs@edge \
@@ -29,6 +30,7 @@ RUN echo "@edge https://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/reposit
     file \
     imagemagick@edge \
     ca-certificates \
+    protobuf \
  && npm install -g npm@3 && npm install -g yarn \
  && update-ca-certificates \
  && rm -rf /tmp/* /var/cache/apk/*
diff --git a/Gemfile b/Gemfile
index 3651ad8b..9c22b3c4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,7 +19,7 @@ gem 'paperclip', '~> 5.1'
 gem 'paperclip-av-transcoder'
 
 gem 'addressable'
-gem 'cld2', require: 'cld'
+gem 'cld3', '~> 3.1.0'
 gem 'devise'
 gem 'devise-two-factor'
 gem 'doorkeeper'
diff --git a/Gemfile.lock b/Gemfile.lock
index 1baf6bec..059fbab0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -99,8 +99,8 @@ GEM
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
     chunky_png (1.3.8)
-    cld2 (1.0.3)
-      ffi (~> 1.9.3)
+    cld3 (3.1.0)
+      ffi (>= 1.1.0, < 1.10.0)
     climate_control (0.1.0)
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
@@ -480,7 +480,7 @@ DEPENDENCIES
   capistrano-rbenv
   capistrano-yarn
   capybara
-  cld2
+  cld3 (~> 3.1.0)
   devise
   devise-two-factor
   doorkeeper
diff --git a/Vagrantfile b/Vagrantfile
index b2ebbb83..f2302b24 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -33,7 +33,9 @@ sudo apt-get install \
   redis-tools \
   postgresql \
   postgresql-contrib \
+  protobuf-compiler \
   yarn \
+  libprotobuf-dev \
   libreadline-dev \
   -y
 
diff --git a/app/lib/language_detector.rb b/app/lib/language_detector.rb
index ca5cb259..1c22a9cc 100644
--- a/app/lib/language_detector.rb
+++ b/app/lib/language_detector.rb
@@ -6,6 +6,7 @@ class LanguageDetector
   def initialize(text, account = nil)
     @text = text
     @account = account
+    @identifier = CLD3::NNetLanguageIdentifier.new(1, 2048)
   end
 
   def to_iso_s
@@ -15,15 +16,15 @@ class LanguageDetector
   private
 
   def detected_language_code
-    detected_language[:code].to_sym if detected_language_reliable?
+    result.language.to_sym if detected_language_reliable?
   end
 
-  def detected_language
-    @_detected_language ||= CLD.detect_language(text_without_urls)
+  def result
+    @result ||= @identifier.find_language(text_without_urls)
   end
 
   def detected_language_reliable?
-    detected_language[:reliable]
+    result.reliable?
   end
 
   def text_without_urls
diff --git a/spec/lib/language_detector_spec.rb b/spec/lib/language_detector_spec.rb
index 18ab5aee..e543edd4 100644
--- a/spec/lib/language_detector_spec.rb
+++ b/spec/lib/language_detector_spec.rb
@@ -24,15 +24,15 @@ describe LanguageDetector do
     end
 
     describe 'when language can\'t be detected' do
-      it 'confirm language engine cant detect' do
-        result = CLD.detect_language('')
-        expect(result[:reliable]).to be false
+      it 'uses default locale when sent an empty document' do
+        result = described_class.new('').to_iso_s
+        expect(result).to eq :en
       end
 
       describe 'because of a URL' do
         it 'uses default locale when sent just a URL' do
           string = 'http://example.com/media/2kFTgOJLXhQf0g2nKB4'
-          cld_result = CLD.detect_language(string)[:code]
+          cld_result = CLD3::NNetLanguageIdentifier.new(0, 2048).find_language(string)
           expect(cld_result).not_to eq :en
 
           result = described_class.new(string).to_iso_s