diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ae4511f7..7af11c42 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -39,9 +39,6 @@ Alternatively, with the environment activated you can run all of the tests
 using:
 `py.test tests`
 
-To skip the slower ruby / node integration tests, you can set the environment
-variable `slowtests=false`.
-
 ### Setting up the hooks
 
 With the environment activated simply run `pre-commit install`.
diff --git a/testing/util.py b/testing/util.py
index 8a5bfc4d..357968fb 100644
--- a/testing/util.py
+++ b/testing/util.py
@@ -32,11 +32,6 @@ skipif_cant_run_docker = pytest.mark.skipif(
     reason='Docker isn\'t running or can\'t  be accessed',
 )
 
-skipif_slowtests_false = pytest.mark.skipif(
-    os.environ.get('slowtests') == 'false',
-    reason='slowtests=false',
-)
-
 skipif_cant_run_swift = pytest.mark.skipif(
     parse_shebang.find_executable('swift') is None,
     reason='swift isn\'t installed or can\'t be found',
diff --git a/tests/make_archives_test.py b/tests/make_archives_test.py
index 9a0f1e59..2cb62697 100644
--- a/tests/make_archives_test.py
+++ b/tests/make_archives_test.py
@@ -11,7 +11,6 @@ from pre_commit import make_archives
 from pre_commit.util import cmd_output
 from pre_commit.util import cwd
 from testing.fixtures import git_dir
-from testing.util import skipif_slowtests_false
 
 
 def test_make_archive(tempdir_factory):
@@ -50,7 +49,6 @@ def test_make_archive(tempdir_factory):
     assert not os.path.exists(os.path.join(extract_dir, 'foo', 'bar'))
 
 
-@skipif_slowtests_false
 @pytest.mark.integration
 def test_main(tmpdir):
     make_archives.main(('--dest', tmpdir.strpath))
diff --git a/tests/repository_test.py b/tests/repository_test.py
index f7c027cd..dd20dd0e 100644
--- a/tests/repository_test.py
+++ b/tests/repository_test.py
@@ -31,7 +31,6 @@ from testing.fixtures import modify_manifest
 from testing.util import get_resource_path
 from testing.util import skipif_cant_run_docker
 from testing.util import skipif_cant_run_swift
-from testing.util import skipif_slowtests_false
 from testing.util import xfailif_no_pcre_support
 from testing.util import xfailif_windows_no_node
 from testing.util import xfailif_windows_no_ruby
@@ -145,7 +144,6 @@ def test_versioned_python_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @skipif_cant_run_docker
 @pytest.mark.integration
 def test_run_a_docker_hook(tempdir_factory, store):
@@ -156,7 +154,6 @@ def test_run_a_docker_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @skipif_cant_run_docker
 @pytest.mark.integration
 def test_run_a_docker_hook_with_entry_args(tempdir_factory, store):
@@ -167,7 +164,6 @@ def test_run_a_docker_hook_with_entry_args(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @skipif_cant_run_docker
 @pytest.mark.integration
 def test_run_a_failing_docker_hook(tempdir_factory, store):
@@ -179,7 +175,6 @@ def test_run_a_failing_docker_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @skipif_cant_run_docker
 @pytest.mark.integration
 @pytest.mark.parametrize('hook_id', ('echo-entrypoint', 'echo-cmd'))
@@ -191,7 +186,6 @@ def test_run_a_docker_image_hook(tempdir_factory, store, hook_id):
     )
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_node
 @pytest.mark.integration
 def test_run_a_node_hook(tempdir_factory, store):
@@ -201,7 +195,6 @@ def test_run_a_node_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_node
 @pytest.mark.integration
 def test_run_versioned_node_hook(tempdir_factory, store):
@@ -211,7 +204,6 @@ def test_run_versioned_node_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_ruby
 @pytest.mark.integration
 def test_run_a_ruby_hook(tempdir_factory, store):
@@ -221,7 +213,6 @@ def test_run_a_ruby_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_ruby
 @pytest.mark.integration
 def test_run_versioned_ruby_hook(tempdir_factory, store):
@@ -233,7 +224,6 @@ def test_run_versioned_ruby_hook(tempdir_factory, store):
     )
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_ruby
 @pytest.mark.integration
 def test_run_ruby_hook_with_disable_shared_gems(
@@ -499,7 +489,6 @@ def test_additional_dependencies_roll_forward(tempdir_factory, store):
         assert 'mccabe' in output
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_ruby
 @pytest.mark.integration
 def test_additional_ruby_dependencies_installed(
@@ -516,7 +505,6 @@ def test_additional_ruby_dependencies_installed(
         assert 'tins' in output
 
 
-@skipif_slowtests_false
 @xfailif_windows_no_node
 @pytest.mark.integration
 def test_additional_node_dependencies_installed(