diff --git a/tests/group_vars/netbox_stable_2_7 b/tests/group_vars/netbox_stable_2_7
new file mode 100644
index 0000000..e8d1a0e
--- /dev/null
+++ b/tests/group_vars/netbox_stable_2_7
@@ -0,0 +1,3 @@
+---
+netbox_stable: true
+netbox_stable_version: 2.7.12
diff --git a/tests/inventory b/tests/inventory
index c1bf6ea..7df5114 100644
--- a/tests/inventory
+++ b/tests/inventory
@@ -1,17 +1,20 @@
 [netbox:children]
 netbox_stable
+netbox_stable_2_7
 netbox_git
 
 [netbox_stable]
 debian-buster-stable
-debian-stretch-stable
 ubuntu-bionic-stable
-ubuntu-xenial-stable
 centos-7-stable
 
+# The following distributions don't have Python 3.6 in standard repos, so pin
+# them to the last supported stable NetBox release (2.7.12)
+[netbox_stable_2_7]
+debian-stretch-stable
+ubuntu-xenial-stable
+
 [netbox_git]
 debian-buster-git
-debian-stretch-git
 ubuntu-bionic-git
-ubuntu-xenial-git
 centos-7-git