diff --git a/e b/e
index b4751db7c6..a429ebece1 160000
--- a/e
+++ b/e
@@ -1 +1 @@
-Subproject commit b4751db7c6e6def29ba35907972855ec509a9f5d
+Subproject commit a429ebece145f399ce3c088c8c074d98ac55af54
diff --git a/lib/install/fsmspec.go b/lib/install/fsmspec.go
index 93634b9238..60ee871424 100644
--- a/lib/install/fsmspec.go
+++ b/lib/install/fsmspec.go
@@ -29,9 +29,18 @@ import (
 	"k8s.io/client-go/kubernetes"
 )
 
-// FSMSpec returns a function that returns an appropriate phase executor
-// based on the provided params
-func FSMSpec(config FSMConfig) fsm.FSMSpecFunc {
+// FSMSpecFunc defines a function that returns install FSM spec based on the config.
+type FSMSpecFunc func(FSMConfig) fsm.FSMSpecFunc
+
+// FSMSpec is the install FSM spec.
+//
+// It may be overriden by external implementations to support additional
+// install operation phases (e.g. by the enterprise version).
+var FSMSpec FSMSpecFunc = DefaultFSMSpec
+
+// DefaultFSMSpec returns a function that returns an the default install FSM
+// spec for the provided install FSM config.
+func DefaultFSMSpec(config FSMConfig) fsm.FSMSpecFunc {
 	return func(p fsm.ExecutorParams, remote fsm.Remote) (fsm.PhaseExecutor, error) {
 		switch {
 		case strings.HasPrefix(p.Phase.ID, phases.InitPhase):