diff --git a/ansible_mitogen/plugins/connection/mitogen_doas.py b/ansible_mitogen/plugins/connection/mitogen_doas.py
index 7d60b482..873b0d9d 100644
--- a/ansible_mitogen/plugins/connection/mitogen_doas.py
+++ b/ansible_mitogen/plugins/connection/mitogen_doas.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_docker.py b/ansible_mitogen/plugins/connection/mitogen_docker.py
index a98273e0..8af42711 100644
--- a/ansible_mitogen/plugins/connection/mitogen_docker.py
+++ b/ansible_mitogen/plugins/connection/mitogen_docker.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_jail.py b/ansible_mitogen/plugins/connection/mitogen_jail.py
index 1c57bb38..fb7bce54 100644
--- a/ansible_mitogen/plugins/connection/mitogen_jail.py
+++ b/ansible_mitogen/plugins/connection/mitogen_jail.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_local.py b/ansible_mitogen/plugins/connection/mitogen_local.py
index 35504d4d..fcd9c030 100644
--- a/ansible_mitogen/plugins/connection/mitogen_local.py
+++ b/ansible_mitogen/plugins/connection/mitogen_local.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_lxc.py b/ansible_mitogen/plugins/connection/mitogen_lxc.py
index 2195aa3c..ce394102 100644
--- a/ansible_mitogen/plugins/connection/mitogen_lxc.py
+++ b/ansible_mitogen/plugins/connection/mitogen_lxc.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_lxd.py b/ansible_mitogen/plugins/connection/mitogen_lxd.py
index 5d1391b9..77efe6c1 100644
--- a/ansible_mitogen/plugins/connection/mitogen_lxd.py
+++ b/ansible_mitogen/plugins/connection/mitogen_lxd.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_machinectl.py b/ansible_mitogen/plugins/connection/mitogen_machinectl.py
index e71496a3..9b332a3f 100644
--- a/ansible_mitogen/plugins/connection/mitogen_machinectl.py
+++ b/ansible_mitogen/plugins/connection/mitogen_machinectl.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_setns.py b/ansible_mitogen/plugins/connection/mitogen_setns.py
index 5f131655..23f62135 100644
--- a/ansible_mitogen/plugins/connection/mitogen_setns.py
+++ b/ansible_mitogen/plugins/connection/mitogen_setns.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_ssh.py b/ansible_mitogen/plugins/connection/mitogen_ssh.py
index c0c577c3..d2af109c 100644
--- a/ansible_mitogen/plugins/connection/mitogen_ssh.py
+++ b/ansible_mitogen/plugins/connection/mitogen_ssh.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_su.py b/ansible_mitogen/plugins/connection/mitogen_su.py
index fd09d0f0..104a7190 100644
--- a/ansible_mitogen/plugins/connection/mitogen_su.py
+++ b/ansible_mitogen/plugins/connection/mitogen_su.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/connection/mitogen_sudo.py b/ansible_mitogen/plugins/connection/mitogen_sudo.py
index a6cb8bd2..367dd61b 100644
--- a/ansible_mitogen/plugins/connection/mitogen_sudo.py
+++ b/ansible_mitogen/plugins/connection/mitogen_sudo.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/strategy/mitogen.py b/ansible_mitogen/plugins/strategy/mitogen.py
index 4f595161..f8608745 100644
--- a/ansible_mitogen/plugins/strategy/mitogen.py
+++ b/ansible_mitogen/plugins/strategy/mitogen.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/strategy/mitogen_free.py b/ansible_mitogen/plugins/strategy/mitogen_free.py
index 8dfaa16e..d3b1cdc6 100644
--- a/ansible_mitogen/plugins/strategy/mitogen_free.py
+++ b/ansible_mitogen/plugins/strategy/mitogen_free.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys
 
diff --git a/ansible_mitogen/plugins/strategy/mitogen_linear.py b/ansible_mitogen/plugins/strategy/mitogen_linear.py
index d995b67b..51b03096 100644
--- a/ansible_mitogen/plugins/strategy/mitogen_linear.py
+++ b/ansible_mitogen/plugins/strategy/mitogen_linear.py
@@ -26,6 +26,7 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+from __future__ import absolute_import
 import os.path
 import sys