diff --git a/operator/internal/controller/auto/update_controller.go b/operator/internal/controller/auto/update_controller.go
index 54be6433..e07242f0 100644
--- a/operator/internal/controller/auto/update_controller.go
+++ b/operator/internal/controller/auto/update_controller.go
@@ -199,15 +199,15 @@ func isWorkspaceReady(ws *autov1alpha1.Workspace) bool {
 	return meta.IsStatusConditionTrue(ws.Status.Conditions, autov1alpha1.WorkspaceReady)
 }
 
-type workspaceReadyPredicate struct {
-	predicate.Funcs
-}
+type workspaceReadyPredicate struct{}
+
+var _ predicate.Predicate = &workspaceReadyPredicate{}
 
 func (workspaceReadyPredicate) Create(e event.CreateEvent) bool {
 	return isWorkspaceReady(e.Object.(*autov1alpha1.Workspace))
 }
 
-func (workspaceReadyPredicate) Delete(e event.DeleteEvent) bool {
+func (workspaceReadyPredicate) Delete(_ event.DeleteEvent) bool {
 	return false
 }
 
@@ -218,7 +218,7 @@ func (workspaceReadyPredicate) Update(e event.UpdateEvent) bool {
 	return !isWorkspaceReady(e.ObjectOld.(*autov1alpha1.Workspace)) && isWorkspaceReady(e.ObjectNew.(*autov1alpha1.Workspace))
 }
 
-func (workspaceReadyPredicate) Generic(e event.GenericEvent) bool {
+func (workspaceReadyPredicate) Generic(_ event.GenericEvent) bool {
 	return false
 }
 
diff --git a/operator/internal/controller/auto/utils.go b/operator/internal/controller/auto/utils.go
index 06480b6e..4aa06f53 100644
--- a/operator/internal/controller/auto/utils.go
+++ b/operator/internal/controller/auto/utils.go
@@ -91,10 +91,11 @@ func marshalConfigValue(item autov1alpha1.ConfigItem) *agentpb.ConfigValue {
 var l = log.Log.WithName("predicate").WithName("debug")
 
 type DebugPredicate struct {
-	predicate.Funcs
 	Controller string
 }
 
+var _ predicate.Predicate = &DebugPredicate{}
+
 func (p *DebugPredicate) Create(e event.CreateEvent) bool {
 	l.V(1).Info("Create", "controller", p.Controller, "type", fmt.Sprintf("%T", e.Object), "name", e.Object.GetName(), "revision", e.Object.GetResourceVersion())
 	return true
diff --git a/operator/internal/controller/auto/workspace_controller.go b/operator/internal/controller/auto/workspace_controller.go
index 3d6e469b..af9a63be 100644
--- a/operator/internal/controller/auto/workspace_controller.go
+++ b/operator/internal/controller/auto/workspace_controller.go
@@ -333,15 +333,25 @@ func (r *WorkspaceReconciler) SetupWithManager(mgr ctrl.Manager) error {
 		Complete(r)
 }
 
-type statefulSetReadyPredicate struct {
-	predicate.Funcs
+type statefulSetReadyPredicate struct{}
+
+var _ predicate.Predicate = &statefulSetReadyPredicate{}
+
+func isStatefulSetReady(ss *appsv1.StatefulSet) bool {
+	if ss.Status.ObservedGeneration != ss.Generation || ss.Status.UpdateRevision != ss.Status.CurrentRevision {
+		return false
+	}
+	if ss.Status.AvailableReplicas < 1 {
+		return false
+	}
+	return true
 }
 
 func (statefulSetReadyPredicate) Create(e event.CreateEvent) bool {
-	return false
+	return isStatefulSetReady(e.Object.(*appsv1.StatefulSet))
 }
 
-func (statefulSetReadyPredicate) Delete(e event.DeleteEvent) bool {
+func (statefulSetReadyPredicate) Delete(_ event.DeleteEvent) bool {
 	return false
 }
 
@@ -349,19 +359,10 @@ func (statefulSetReadyPredicate) Update(e event.UpdateEvent) bool {
 	if e.ObjectOld == nil || e.ObjectNew == nil {
 		return false
 	}
-	ready := func(ss *appsv1.StatefulSet) bool {
-		if ss.Status.ObservedGeneration != ss.Generation || ss.Status.UpdateRevision != ss.Status.CurrentRevision {
-			return false
-		}
-		if ss.Status.AvailableReplicas < 1 {
-			return false
-		}
-		return true
-	}
-	return !ready(e.ObjectOld.(*appsv1.StatefulSet)) && ready(e.ObjectNew.(*appsv1.StatefulSet))
+	return !isStatefulSetReady(e.ObjectOld.(*appsv1.StatefulSet)) && isStatefulSetReady(e.ObjectNew.(*appsv1.StatefulSet))
 }
 
-func (statefulSetReadyPredicate) Generic(e event.GenericEvent) bool {
+func (statefulSetReadyPredicate) Generic(_ event.GenericEvent) bool {
 	return false
 }
 
diff --git a/operator/internal/controller/pulumi/flux.go b/operator/internal/controller/pulumi/flux.go
index d944110d..61ec9bf5 100644
--- a/operator/internal/controller/pulumi/flux.go
+++ b/operator/internal/controller/pulumi/flux.go
@@ -105,15 +105,15 @@ func fluxSourceKey(gvk schema.GroupVersionKind, name string) string {
 	return fmt.Sprintf("%s:%s", gvk, name)
 }
 
-type fluxSourceReadyPredicate struct {
-	predicate.Funcs
-}
+type fluxSourceReadyPredicate struct{}
+
+var _ predicate.Predicate = &fluxSourceReadyPredicate{}
 
 func (fluxSourceReadyPredicate) Create(e event.CreateEvent) bool {
 	return checkFluxSourceReady(e.Object.(*unstructured.Unstructured))
 }
 
-func (fluxSourceReadyPredicate) Delete(e event.DeleteEvent) bool {
+func (fluxSourceReadyPredicate) Delete(_ event.DeleteEvent) bool {
 	return false
 }
 
@@ -124,6 +124,6 @@ func (fluxSourceReadyPredicate) Update(e event.UpdateEvent) bool {
 	return !checkFluxSourceReady(e.ObjectOld.(*unstructured.Unstructured)) && checkFluxSourceReady(e.ObjectNew.(*unstructured.Unstructured))
 }
 
-func (fluxSourceReadyPredicate) Generic(e event.GenericEvent) bool {
+func (fluxSourceReadyPredicate) Generic(_ event.GenericEvent) bool {
 	return false
-}
\ No newline at end of file
+}
diff --git a/operator/internal/controller/pulumi/stack_controller.go b/operator/internal/controller/pulumi/stack_controller.go
index f4f1270e..cf4b8131 100644
--- a/operator/internal/controller/pulumi/stack_controller.go
+++ b/operator/internal/controller/pulumi/stack_controller.go
@@ -102,7 +102,7 @@ func (r *StackReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	// or the "force reconcile" annotation is used (and not marked as handled).
 	predicates := []predicate.Predicate{
 		predicate.Or(
-			predicate.And(predicate.GenerationChangedPredicate{}, predicate.Not(&FinalizerAddedPredicate{})),
+			predicate.And(predicate.GenerationChangedPredicate{}, predicate.Not(&finalizerAddedPredicate{})),
 			ReconcileRequestedPredicate{}),
 	}
 
@@ -354,15 +354,15 @@ func isWorkspaceReady(ws *autov1alpha1.Workspace) bool {
 	return meta.IsStatusConditionTrue(ws.Status.Conditions, autov1alpha1.WorkspaceReady)
 }
 
-type workspaceReadyPredicate struct {
-	predicate.Funcs
-}
+type workspaceReadyPredicate struct{}
+
+var _ predicate.Predicate = &workspaceReadyPredicate{}
 
 func (workspaceReadyPredicate) Create(e event.CreateEvent) bool {
 	return isWorkspaceReady(e.Object.(*autov1alpha1.Workspace))
 }
 
-func (workspaceReadyPredicate) Delete(e event.DeleteEvent) bool {
+func (workspaceReadyPredicate) Delete(_ event.DeleteEvent) bool {
 	return false
 }
 
@@ -373,7 +373,7 @@ func (workspaceReadyPredicate) Update(e event.UpdateEvent) bool {
 	return !isWorkspaceReady(e.ObjectOld.(*autov1alpha1.Workspace)) && isWorkspaceReady(e.ObjectNew.(*autov1alpha1.Workspace))
 }
 
-func (workspaceReadyPredicate) Generic(e event.GenericEvent) bool {
+func (workspaceReadyPredicate) Generic(_ event.GenericEvent) bool {
 	return false
 }
 
@@ -384,9 +384,9 @@ func isUpdateComplete(update *autov1alpha1.Update) bool {
 	return meta.IsStatusConditionTrue(update.Status.Conditions, autov1alpha1.UpdateConditionTypeComplete)
 }
 
-type updateCompletePredicate struct {
-	predicate.Funcs
-}
+type updateCompletePredicate struct{}
+
+var _ predicate.Predicate = &updateCompletePredicate{}
 
 func (updateCompletePredicate) Create(e event.CreateEvent) bool {
 	return isUpdateComplete(e.Object.(*autov1alpha1.Update))
@@ -1453,3 +1453,29 @@ func patchObject[T any, V any](base T, patch V) (*T, error) {
 
 	return &result, nil
 }
+
+// finalizerAddedPredicate detects when a finalizer is added to an object.
+// It is used to suppress reconciliation when the stack controller adds its finalizer, which causes
+// a generation change that would otherwise trigger reconciliation.
+type finalizerAddedPredicate struct{}
+
+var _ predicate.Predicate = &finalizerAddedPredicate{}
+
+func (p *finalizerAddedPredicate) Create(_ event.CreateEvent) bool {
+	return false
+}
+
+func (p *finalizerAddedPredicate) Delete(_ event.DeleteEvent) bool {
+	return false
+}
+
+func (p *finalizerAddedPredicate) Update(e event.UpdateEvent) bool {
+	if e.ObjectOld == nil || e.ObjectNew == nil {
+		return false
+	}
+	return !controllerutil.ContainsFinalizer(e.ObjectOld, pulumiFinalizer) && controllerutil.ContainsFinalizer(e.ObjectNew, pulumiFinalizer)
+}
+
+func (p *finalizerAddedPredicate) Generic(_ event.GenericEvent) bool {
+	return false
+}
diff --git a/operator/internal/controller/pulumi/utils.go b/operator/internal/controller/pulumi/utils.go
index ba66bda3..d6547931 100644
--- a/operator/internal/controller/pulumi/utils.go
+++ b/operator/internal/controller/pulumi/utils.go
@@ -19,9 +19,6 @@ package pulumi
 import (
 	"github.com/prometheus/client_golang/prometheus"
 	dto "github.com/prometheus/client_model/go"
-	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
-	"sigs.k8s.io/controller-runtime/pkg/event"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
 )
 
 func exactlyOneOf(these ...bool) bool {
@@ -44,29 +41,3 @@ func getGaugeValue(metric prometheus.Gauge) (float64, error) {
 	}
 	return m.Gauge.GetValue(), nil
 }
-
-// FinalizerAddedPredicate detects when a finalizer is added to an object.
-// It is used to suppress reconciliation when the stack controller adds its finalizer, which causes
-// a generation change that would otherwise trigger reconciliation.
-type FinalizerAddedPredicate struct {
-	predicate.Funcs
-}
-
-func (p *FinalizerAddedPredicate) Create(e event.CreateEvent) bool {
-	return false
-}
-
-func (p *FinalizerAddedPredicate) Delete(e event.DeleteEvent) bool {
-	return false
-}
-
-func (p *FinalizerAddedPredicate) Update(e event.UpdateEvent) bool {
-	if e.ObjectOld == nil || e.ObjectNew == nil {
-		return false
-	}
-	return !controllerutil.ContainsFinalizer(e.ObjectOld, pulumiFinalizer) && controllerutil.ContainsFinalizer(e.ObjectNew, pulumiFinalizer)
-}
-
-func (p *FinalizerAddedPredicate) Generic(e event.GenericEvent) bool {
-	return false
-}