diff --git a/.github/workflows/development.yml b/.github/workflows/development.yml
new file mode 100644
index 0000000..ea11ed2
--- /dev/null
+++ b/.github/workflows/development.yml
@@ -0,0 +1,51 @@
+name: Development
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ${{matrix.os}}-latest
+    continue-on-error: ${{matrix.experimental}}
+    
+    strategy:
+      matrix:
+        os:
+          - ubuntu
+          - macos
+        
+        ruby:
+          - 2.5
+          - 2.6
+          - 2.7
+        
+        experimental: [false]
+        env: [""]
+        
+        include:
+          - os: ubuntu
+            ruby: truffleruby
+            experimental: true
+            env: JRUBY_OPTS="--debug -X+O"
+          - os: ubuntu
+            ruby: jruby
+            experimental: true
+          - os: ubuntu
+            ruby: head
+            experimental: true
+          - os: ubuntu
+            ruby: 2.6
+            experimental: false
+            env: COVERAGE=PartialSummary,Coveralls
+    
+    steps:
+    - uses: actions/checkout@v1
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{matrix.ruby}}
+    
+    - name: Install dependencies
+      run: ${{matrix.env}} bundle install
+    
+    - name: Run tests
+      timeout-minutes: 5
+      run: ${{matrix.env}} bundle exec rspec
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index ed343cd..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-language: ruby
-dist: xenial
-cache: bundler
-
-matrix:
-  include:
-    - rvm: 2.3
-    - rvm: 2.4
-    - rvm: 2.5
-    - rvm: 2.6
-    - rvm: 2.6
-      env: COVERAGE=BriefSummary,Coveralls
-    - rvm: ruby-head
-    - rvm: truffleruby
-    - rvm: jruby-head
-      env: JRUBY_OPTS="--debug -X+O"
-  allow_failures:
-    - rvm: ruby-head
-    - rvm: truffleruby
-    - rvm: jruby-head
diff --git a/Gemfile b/Gemfile
index fa75df1..e8a2d78 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
 source 'https://rubygems.org'
 
 gemspec
+
+# gem "async", path: "../async"
diff --git a/README.md b/README.md
index ae6aae1..b13de8d 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Provides support for connection pooling both singleplex and multiplex resources.
 
-[![Build Status](https://travis-ci.com/socketry/async-pool.svg)](https://travis-ci.com/socketry/async-pool)
+[![Actions Status](https://github.com/socketry/async-pool/workflows/Development/badge.svg)](https://github.com/socketry/async-pool/actions?workflow=Development)
 
 ## Installation
 
diff --git a/Rakefile b/Rakefile
deleted file mode 100644
index a1d8b92..0000000
--- a/Rakefile
+++ /dev/null
@@ -1,6 +0,0 @@
-require "bundler/gem_tasks"
-require "rspec/core/rake_task"
-
-RSpec::Core::RakeTask.new
-
-task :default => :spec
diff --git a/async-pool.gemspec b/async-pool.gemspec
index 07e934a..7cd79f6 100644
--- a/async-pool.gemspec
+++ b/async-pool.gemspec
@@ -17,12 +17,12 @@ Gem::Specification.new do |spec|
 	spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
 	spec.require_paths = ["lib"]
 	
-	spec.add_dependency("async", "~> 1.8")
+	spec.add_dependency("async", "~> 1.25")
 	
 	spec.add_development_dependency "async-rspec", "~> 1.1"
 	
 	spec.add_development_dependency "covered"
 	spec.add_development_dependency "bundler"
 	spec.add_development_dependency "rspec", "~> 3.6"
-	spec.add_development_dependency "rake"
+	spec.add_development_dependency "bake-bundler"
 end
diff --git a/lib/async/pool/controller.rb b/lib/async/pool/controller.rb
index 40fc03e..aaf9d6e 100644
--- a/lib/async/pool/controller.rb
+++ b/lib/async/pool/controller.rb
@@ -40,6 +40,8 @@ def initialize(constructor, limit: nil)
 				
 				@constructor = constructor
 				@guard = Async::Semaphore.new(1)
+				
+				@gardener = nil
 			end
 			
 			# @attr [Hash<Resource, Integer>] all allocated resources, and their associated usage.
@@ -97,6 +99,8 @@ def release(resource)
 			def close
 				@resources.each_key(&:close)
 				@resources.clear
+				
+				@gardener&.stop
 			end
 			
 			def to_s
@@ -142,6 +146,19 @@ def retire(resource)
 			
 			protected
 			
+			def start_gardener
+				return if @gardener
+				
+				Async(transient: true) do |task|
+					@gardener = task
+					
+					Task.yield
+				ensure
+					@gardener = nil
+					self.close
+				end
+			end
+			
 			def usage_string
 				"#{@resources.size}/#{@limit || '∞'}"
 			end
@@ -177,6 +194,8 @@ def wait_for_resource
 			end
 			
 			def create_resource
+				self.start_gardener
+				
 				# This might return nil, which means creating the resource failed.
 				if resource = @constructor.call
 					@resources[resource] = 1
diff --git a/lib/async/pool/version.rb b/lib/async/pool/version.rb
index dcc64c9..0afb285 100644
--- a/lib/async/pool/version.rb
+++ b/lib/async/pool/version.rb
@@ -20,6 +20,6 @@
 
 module Async
 	module Pool
-		VERSION = "0.2.0"
+		VERSION = "0.3.0"
 	end
 end
diff --git a/spec/async/pool/controller_spec.rb b/spec/async/pool/controller_spec.rb
index 84c4a95..7657e26 100644
--- a/spec/async/pool/controller_spec.rb
+++ b/spec/async/pool/controller_spec.rb
@@ -131,3 +131,22 @@
 		end
 	end
 end
+
+RSpec.describe Async::Pool::Controller, timeout: 1 do
+	subject {described_class.new(Async::Pool::Resource)}
+	
+	describe '#close' do
+		it "closes all resources when going out of scope" do
+			Async do
+				object = subject.acquire
+				expect(object).to_not be_nil
+				subject.release(object)
+				
+				# There is some resource which is still open:
+				expect(subject.resources).to_not be_empty
+			end
+			
+			expect(subject.resources).to be_empty
+		end
+	end
+end