diff --git a/go.mod b/go.mod
index dcde997..1c93b91 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.21
 
 require (
 	fortio.org/assert v1.2.1
-	fortio.org/fortio v1.63.8
+	fortio.org/fortio v1.63.9
 	fortio.org/log v1.12.2
 	fortio.org/scli v1.14.2
 	github.com/prometheus/client_golang v1.19.1
diff --git a/go.sum b/go.sum
index 76721db..c737be2 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,8 @@ fortio.org/cli v1.5.2 h1:MfEcHAhYyIkwG04/K1YJL946Y8/jyAjmF9WeR5ZG/5E=
 fortio.org/cli v1.5.2/go.mod h1:SdQufh5PLd6oX2EtvtzLFw++gw8zVoejD1WlwGXAvYw=
 fortio.org/dflag v1.7.1 h1:sDdYSw3py02awhgtWEtRtZvOM0UWgeDweRsXWROU3A0=
 fortio.org/dflag v1.7.1/go.mod h1:3KB1SSilm1WwYl7gydDCnV24+DQaycAusNyy06dDD+c=
-fortio.org/fortio v1.63.8 h1:oqU+ZE2eNMt03uul48eiUYpMnV6KkjsaEOb6bsf//W0=
-fortio.org/fortio v1.63.8/go.mod h1:R6X+CAPCvRViXMV0Ce3xKR25kx3XvEtgVpCEyYmE7DE=
+fortio.org/fortio v1.63.9 h1:F7ANE0xNa+/KUBbHCdCIO4HZqoIG+gN5TPf2qbOtsT8=
+fortio.org/fortio v1.63.9/go.mod h1:R6X+CAPCvRViXMV0Ce3xKR25kx3XvEtgVpCEyYmE7DE=
 fortio.org/log v1.12.2 h1:JwLDFvEUKGfqA09fcf+mOn8kxsvwhjXV92xghxNnnwA=
 fortio.org/log v1.12.2/go.mod h1:1tMBG/Elr6YqjmJCWiejJp2FPvXg7/9UAN0Rfpkyt1o=
 fortio.org/scli v1.14.2 h1:dZEyzpC6YmCm24YSd2AvCAeMOxFEl7o4HvArFUpksIo=