diff --git a/go.mod b/go.mod
index 8e637fe..758ead9 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/Azure/go-amqp v1.0.3
 	github.com/eclipse/paho.mqtt.golang v1.4.3
 	github.com/prometheus/client_golang v1.18.0
-	github.com/relvacode/iso8601 v1.3.0
+	github.com/relvacode/iso8601 v1.4.0
 	github.com/spf13/cobra v1.8.0
 	github.com/stretchr/testify v1.8.4
 	github.com/thediveo/enumflag/v2 v2.0.5
diff --git a/go.sum b/go.sum
index bf727d2..39704df 100644
--- a/go.sum
+++ b/go.sum
@@ -49,8 +49,8 @@ github.com/prometheus/common v0.45.0 h1:2BGz0eBc2hdMDLnO/8n0jeB3oPrt2D08CekT0lne
 github.com/prometheus/common v0.45.0/go.mod h1:YJmSTw9BoKxJplESWWxlbyttQR4uaEcGyv9MZjVOJsY=
 github.com/prometheus/procfs v0.12.0 h1:jluTpSng7V9hY0O2R9DzzJHYb2xULk9VTR1V1R/k6Bo=
 github.com/prometheus/procfs v0.12.0/go.mod h1:pcuDEFsWDnvcgNzo4EEweacyhjeA9Zk3cnaOZAZEfOo=
-github.com/relvacode/iso8601 v1.3.0 h1:HguUjsGpIMh/zsTczGN3DVJFxTU/GX+MMmzcKoMO7ko=
-github.com/relvacode/iso8601 v1.3.0/go.mod h1:FlNp+jz+TXpyRqgmM7tnzHHzBnz776kmAH2h3sZCn0I=
+github.com/relvacode/iso8601 v1.4.0 h1:GsInVSEJfkYuirYFxa80nMLbH2aydgZpIf52gYZXUJs=
+github.com/relvacode/iso8601 v1.4.0/go.mod h1:FlNp+jz+TXpyRqgmM7tnzHHzBnz776kmAH2h3sZCn0I=
 github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
 github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=