diff --git a/go.mod b/go.mod
index ec0bd13..e044878 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module fortio.org/cli
 go 1.20
 
 require (
-	fortio.org/duration v1.0.1
+	fortio.org/duration v1.0.4
 	fortio.org/log v1.17.2
 	fortio.org/version v1.0.4
 	golang.org/x/crypto/x509roots/fallback v0.0.0-20250203165127-fa5273e46196
diff --git a/go.sum b/go.sum
index 05dc42c..79a7666 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-fortio.org/duration v1.0.1 h1:/VJLQBvMz3wes4W9tuF0OQT6UYxTU7t4bZPfq6vwdGQ=
-fortio.org/duration v1.0.1/go.mod h1:RuBVqdcCKRwMmI8WIdVq8kd7ngQPCIe6G7AU0NC0XDw=
+fortio.org/duration v1.0.4 h1:TB07ng4UsMZPDRujJRkTJIcNqMTLM283zob10nb9K24=
+fortio.org/duration v1.0.4/go.mod h1:RuBVqdcCKRwMmI8WIdVq8kd7ngQPCIe6G7AU0NC0XDw=
 fortio.org/log v1.17.2 h1:JPX/ApDXDoGzsNtXw0AJI4ai6tl9wHp4Ch6bVs1OK0Y=
 fortio.org/log v1.17.2/go.mod h1:1V7bPfFI7ZVTdtN9DnUCAN0ilEMs5VgKjHIDRO7Mjzk=
 fortio.org/struct2env v0.4.2 h1:Xh7HlS9vf2ZdRvRfmoGIasNDO8t6z36M713utVODRCo=