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