diff --git a/environment.go b/environment.go
index 042de35..86f59b3 100644
--- a/environment.go
+++ b/environment.go
@@ -28,7 +28,7 @@ const defaultShutdownTimeout         =  8 * time.Minute
 type environment struct {
 	name        string
 	description string
-	actors      usync.RWLocker[*actorSets]
+	actors      usync.RWMonitor[*actorSets]
 	ctx         context.Context
 	done        context.CancelCauseFunc
 	group       sync.WaitGroup
@@ -77,7 +77,7 @@ func (this *environment) Run(name, description string, actors ...Actor) {
 	
 	this.name = name
 	this.description = description
-	this.actors = usync.NewRWLocker(&actorSets { })
+	this.actors = usync.NewRWMonitor(&actorSets { })
 	this.addToSets(actors...)
 	this.addToSets(&cron {
 		trimFunc: this.phase70_5Trimming,
diff --git a/go.mod b/go.mod
index 7d0e120..f224637 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,6 @@ go 1.23.0
 require (
 	git.tebibyte.media/sashakoshka/go-cli v0.1.3
 	git.tebibyte.media/sashakoshka/go-service v0.1.1
-	git.tebibyte.media/sashakoshka/go-util v0.8.0
+	git.tebibyte.media/sashakoshka/go-util v0.9.1
 	golang.org/x/sync v0.10.0
 )
diff --git a/go.sum b/go.sum
index 0bc9a43..9caaedd 100644
--- a/go.sum
+++ b/go.sum
@@ -2,7 +2,7 @@ git.tebibyte.media/sashakoshka/go-cli v0.1.3 h1:tSkWjyx2JrGu6KotbXWSTKSYGGS1D4O3
 git.tebibyte.media/sashakoshka/go-cli v0.1.3/go.mod h1:JFA3wSdRkXxa4iQJWHfe3DokiG7Dh2XUJBzPmuVlbuY=
 git.tebibyte.media/sashakoshka/go-service v0.1.1 h1:WhDK532iB3hrVILih2+rJmRtCctXIoj2uEWMm8tU4+E=
 git.tebibyte.media/sashakoshka/go-service v0.1.1/go.mod h1:qPtzuqB1psUWZrmy3XTU1dZHHhVNHHP2pSBkpzlTazk=
-git.tebibyte.media/sashakoshka/go-util v0.8.0 h1:XFuZ8HQkrnibrV016rso00geCFPatKpX4jxkIVhZPaQ=
-git.tebibyte.media/sashakoshka/go-util v0.8.0/go.mod h1:0Q1t+PePdx6tFYkRuJNcpM1Mru7wE6X+it1kwuOH+6Y=
+git.tebibyte.media/sashakoshka/go-util v0.9.1 h1:eGAbLwYhOlh4aq/0w+YnJcxT83yPhXtxnYMzz6K7xGo=
+git.tebibyte.media/sashakoshka/go-util v0.9.1/go.mod h1:0Q1t+PePdx6tFYkRuJNcpM1Mru7wE6X+it1kwuOH+6Y=
 golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=