diff --git a/.travis.yml b/.travis.yml
index 797ab53e..0e1526b2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,40 @@
 sudo: false
+os:
+  - linux
+
+dist:
+  - trusty
+
 language: rust
-rust:
-- 1.13.0
-- beta
-- stable
-cache: cargo
+
+matrix:
+  include:
+    - rust: 1.13.0
+      env: IMAG_RUBY_VERSION=2.3.3
+    - rust: beta
+      env: IMAG_RUBY_VERSION=2.3.3
+    - rust: stable
+      env: IMAG_RUBY_VERSION=2.3.3
+
+cache:
+  cargo: true
+  directories:
+    - $TRAVIS_BUILD_DIR/libimagruby/vendor/bundle
+
+before_install:
+- |
+  rvm install "$IMAG_RUBY_VERSION"
+  rvm use "$IMAG_RUBY_VERSION"
+  ruby --version
+  pushd libimagruby
+  bundle install --jobs=3 --retry=3 --path=$TRAVIS_BUILD_DIR/libimagruby/vendor/bundle
+  popd
+
 before_script:
 - |
   pip install 'travis-cargo<0.2' --user &&
   export PATH=$HOME/.local/bin:$PATH
+
 script:
 - |
   make all test
@@ -25,12 +51,14 @@ addons:
     - tree
     sources:
     - kalakris-cmake
+
 after_success:
 - |
   pushd .imag-documentation &&
   travis-cargo --only stable doc &&
   travis-cargo --only stable doc-upload
   popd
+
 notifications:
   email:
     on_success: never
@@ -39,7 +67,11 @@ notifications:
     - chat.freenode.net#imag
     template:
     - "%{repository_name} (%{branch} @ %{commit} by %{author}): %{result}"
+
 env:
   global:
-  - TRAVIS_CARGO_NIGHTLY_FEATURE=dev
-  - secure: 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
+    - THERMITE_DEBUG_FILENAME=/tmp/thermite-debug.log
+    - secure: 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
+  matrix:
+    - IMAG_RUBY_VERSION=2.3.3
+    - IMAG_RUBY_VERSION=2.4.0
diff --git a/Makefile b/Makefile
index e47c0c1d..42f629f8 100644
--- a/Makefile
+++ b/Makefile
@@ -68,9 +68,9 @@ lib: $(LIB_TARGETS)
 lib-test: $(LIB_TARGETS_TEST)
 
 lib-imag-ruby-test:
-	@$(MAKE) -C libimagruby
+	@$(MAKE) -C libimagruby test
 
-test: bin-test lib-test
+test: bin-test lib-test lib-imag-ruby-test
 
 install: $(INSTALL_TARGETS) imag-bin-install
 	@$(ECHO) "\t[INSTALL]"
diff --git a/default.nix b/default.nix
index c0dfb890..5d8e76d5 100644
--- a/default.nix
+++ b/default.nix
@@ -7,6 +7,8 @@ let
   ];
 
   dependencies = with pkgs; [
+    ruby
+    bundler
     cmake
     curl
     gcc
diff --git a/libimagruby/.gitignore b/libimagruby/.gitignore
index 2f7c731a..d76ba1ac 100644
--- a/libimagruby/.gitignore
+++ b/libimagruby/.gitignore
@@ -1,3 +1,5 @@
 .bundle
 Gemfile.lock
+lib/liblibimagruby.so
 vendor/bundle
+libimagruby*.tar.gz
diff --git a/libimagruby/Makefile b/libimagruby/Makefile
index f7ed82d6..f597909a 100644
--- a/libimagruby/Makefile
+++ b/libimagruby/Makefile
@@ -1,20 +1,22 @@
 ECHO=$(shell which echo) -e
 RUBY=$(shell which ruby)
-RUBY_TESTS=$(shell find ./test -maxdepth 1 -name "*.rb" -type f)
-RUBY_TEST_TARGETS=$(foreach x,$(subst ,,$(RUBY_TESTS)),$(x))
+BUNDLE=$(shell which bundle)
 
-all: lib
+all:
+	@$(ECHO) "There is no default target here"
 
-lib:
-	$(MAKE) -C .. libimagruby
+bundle:
+	@$(ECHO) "[BUNDLE]"
+	@$(BUNDLE) install --path vendor/bundle
 
-lib-release:
-	$(MAKE) -C .. libimagruby-release
+bundle-rake-thermite-test:
+	@$(ECHO) "[RAKE  ][thermite]"
+	@CARGO_TARGET=debug $(BUNDLE) exec rake thermite:tarball
 
-test: lib $(RUBY_TEST_TARGETS)
-
-$(RUBY_TEST_TARGETS): %: lib .FORCE
-	@$(ECHO) "\t[TEST   ]:\t$@"
-	@$(RUBY) $(subst -test,,$@)
+test: lib bundle-rake-thermite-test
+	@$(ECHO) "[TEST  ]"
 
 .FORCE:
+
+.PHONY: all
+
diff --git a/libimagruby/Rakefile b/libimagruby/Rakefile
index 43022f71..a1397441 100644
--- a/libimagruby/Rakefile
+++ b/libimagruby/Rakefile
@@ -1,2 +1,5 @@
 require "bundler/gem_tasks"
-task :default => :spec
+require 'thermite/tasks'
+
+Thermite::Tasks.new(cargo_project_path: "..", cargo_workspace_member: "libimagruby")
+
diff --git a/libimagruby/ext/Rakefile b/libimagruby/ext/Rakefile
new file mode 100644
index 00000000..4e097360
--- /dev/null
+++ b/libimagruby/ext/Rakefile
@@ -0,0 +1,5 @@
+require 'thermite/tasks'
+
+Thermite::Tasks.new(cargo_project_path: "..", cargo_workspace_member: "libimagruby")
+task default: %w(thermite:build)
+
diff --git a/libimagruby/imag.gemspec b/libimagruby/imag.gemspec
index c6066912..5ffa7a62 100644
--- a/libimagruby/imag.gemspec
+++ b/libimagruby/imag.gemspec
@@ -23,4 +23,7 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency "bundler", "~> 1.13"
   spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency 'thermite', "~> 0.11", ">= 0.11.1"
+
+  spec.extensions << 'ext/Rakefile'
 end
diff --git a/libimagruby/lib/imag.rb b/libimagruby/lib/imag.rb
index b8c91115..d0db0d53 100644
--- a/libimagruby/lib/imag.rb
+++ b/libimagruby/lib/imag.rb
@@ -1,5 +1,12 @@
 #!/usr/bin/env ruby
 
+require 'thermite/fiddle'
+
+toplevel_dir = File.dirname(File.dirname(__FILE__))
+Thermite::Fiddle.load_module('init_imag',
+                             cargo_project_path: toplevel_dir,
+                             ruby_project_path: toplevel_dir)
+
 module Imag
 
   IMAG_INIT_FN_NAME = 'imag_ruby_initialize'
diff --git a/libimagruby/test/test_entries.rb b/libimagruby/test/test_entries.rb
deleted file mode 100644
index f10dc643..00000000
--- a/libimagruby/test/test_entries.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env ruby
-
-require "../target/debug/liblibimagruby.so"
-
-color   = true
-verbose = true
-debug   = false
-
-RImag.init_logger debug, verbose, color
-
-store_handle = RStoreHandle::new(false, "/tmp/store")
-id = RStoreId::new_baseless("test")
-test_handle = store_handle.retrieve(id)
-puts "Header: #{test_handle.header.to_s}"
-puts "Content: '#{test_handle.content}'"
-
-test_handle.content = "Foo"
-test_handle.header = {
-  "imag" => {
-    "links" => [],
-    "version" => "0.2.0"
-  },
-  "example" => {
-    "test" => "foo"
-  }
-}
-
diff --git a/libimagruby/test/test_ruby.rb b/libimagruby/test/test_ruby.rb
deleted file mode 100644
index 9b088594..00000000
--- a/libimagruby/test/test_ruby.rb
+++ /dev/null
@@ -1,58 +0,0 @@
-#!/usr/bin/env ruby
-
-require "../target/debug/liblibimagruby.so"
-
-color = true
-verbose = true
-debug = true
-
-RImag.init_logger debug, verbose, color
-
-RImag.trace  "Trace-Hello from Ruby"
-RImag.dbg    "Debug-Hello from Ruby"
-RImag.debug  "Debug-Hello from Ruby"
-RImag.info   "Info-Hello from Ruby"
-RImag.warn   "Warn-Hello from Ruby"
-RImag.error  "Error-Hello from Ruby"
-
-def works name, b
-  if b
-    RImag.info "Works: #{name}"
-  else
-    RImag.error "Fails: #{name}"
-  end
-end
-
-def has_instance_method klass, meth
-  works "#{klass}.instance_methods.include? #{meth}",
-    (klass.instance_methods.include? meth)
-end
-
-puts "---"
-
-works "RStoreId.new_baseless", (not RStoreId.new_baseless("test").nil?)
-
-works "RStoreHandle.respond_to? :new", (RStoreHandle.respond_to? :new)
-
-has_instance_method RStoreHandle, :create
-has_instance_method RStoreHandle, :get
-has_instance_method RStoreHandle, :retrieve
-has_instance_method RStoreHandle, :delete
-has_instance_method RStoreHandle, :update
-has_instance_method RStoreHandle, :move_by_id
-has_instance_method RStoreHandle, :save_as
-has_instance_method RStoreHandle, :save_to
-
-has_instance_method RFileLockEntryHandle, :content
-has_instance_method RFileLockEntryHandle, :content=
-has_instance_method RFileLockEntryHandle, :header
-has_instance_method RFileLockEntryHandle, :header=
-
-has_instance_method REntryHeader, :read
-has_instance_method REntryHeader, :[]
-has_instance_method REntryHeader, :set
-has_instance_method REntryHeader, :[]=
-has_instance_method REntryHeader, :insert
-
-works "REntryContent.superclass == String", (REntryContent.superclass == String)
-
diff --git a/libimagruby/test/test_store.rb b/libimagruby/test/test_store.rb
deleted file mode 100644
index aed00177..00000000
--- a/libimagruby/test/test_store.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env ruby
-
-require "../target/debug/liblibimagruby.so"
-
-color = true
-verbose = true
-debug = true
-
-RImag.init_logger debug, verbose, color
-
-store_handle = RStoreHandle::new(false, "/tmp/store")
-id = RStoreId::new_baseless("test")
-test_handle = store_handle.create(id)
-
-RImag.info "Created #{test_handle.location.to_str} from Ruby"
-