diff --git a/doc/source/user/index.rst b/doc/source/user/index.rst
index d7ef951cf9..b4bf4547d2 100644
--- a/doc/source/user/index.rst
+++ b/doc/source/user/index.rst
@@ -2265,8 +2265,6 @@ network-driver
   +========+=============+
   | Flannel| supported   |
   +--------+-------------+
-  | Docker | unsupported |
-  +--------+-------------+
   | Calico | supported   |
   +--------+-------------+
 
diff --git a/magnum/api/validation.py b/magnum/api/validation.py
index 7c1e1eb1a3..96493bbdbe 100755
--- a/magnum/api/validation.py
+++ b/magnum/api/validation.py
@@ -319,7 +319,12 @@ class Validator(object):
 
 class K8sValidator(Validator):
 
-    supported_network_drivers = ['flannel', 'calico']
+    # NOTE(okozachenko): Cilium is added in the supported list because some
+    # cluster drivers like capi-driver supports this. But the Heat driver
+    # doesn't support this yet.
+    # In the future, supported network driver list should be fetched from
+    # cluster driver implementation instead of this fixed values.
+    supported_network_drivers = ['flannel', 'calico', 'cilium']
     supported_server_types = ['vm', 'bm']
     allowed_network_drivers = (
         CONF.cluster_template.kubernetes_allowed_network_drivers)
diff --git a/magnum/conf/cluster_templates.py b/magnum/conf/cluster_templates.py
index 69e8fced38..2e6d2dfc4e 100644
--- a/magnum/conf/cluster_templates.py
+++ b/magnum/conf/cluster_templates.py
@@ -19,11 +19,8 @@ cluster_template_group = cfg.OptGroup(name='cluster_template',
 
 cluster_template_opts = [
     cfg.ListOpt('kubernetes_allowed_network_drivers',
-                default=['all'],
-                help=_("Allowed network drivers for kubernetes "
-                       "cluster-templates. Use 'all' keyword to allow all "
-                       "drivers supported for kubernetes cluster-templates. "
-                       "Supported network drivers include flannel."),
+                default=['flannel', 'calico'],
+                help=_("Allowed network drivers for kubernetes."),
                 ),
     cfg.StrOpt('kubernetes_default_network_driver',
                default='flannel',
diff --git a/magnum/tests/unit/api/test_validation.py b/magnum/tests/unit/api/test_validation.py
index df636ba5b3..c963c48acd 100755
--- a/magnum/tests/unit/api/test_validation.py
+++ b/magnum/tests/unit/api/test_validation.py
@@ -159,7 +159,9 @@ class TestValidation(base.BaseTestCase):
 
     def test_enforce_network_driver_types_default_config_create(self):
         cluster_template = self._test_enforce_network_driver_types_create(
-            network_driver_type=None, validator_default_network_driver="type1"
+            network_driver_type=None,
+            validator_allowed_network_drivers=["type1"],
+            validator_default_network_driver="type1",
         )
         self.assertEqual("type1", cluster_template.network_driver)
 
diff --git a/releasenotes/notes/add-cilium-network-driver-8715190b14cb4f89.yaml b/releasenotes/notes/add-cilium-network-driver-8715190b14cb4f89.yaml
new file mode 100644
index 0000000000..3f9db26e8e
--- /dev/null
+++ b/releasenotes/notes/add-cilium-network-driver-8715190b14cb4f89.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Add Cilium as a supported network driver of Kubernetes