diff --git a/go.mod b/go.mod
index 816d417b422b3f2826464f0363fe5538cd5ac312..f0ae7d48d27fd01551b384943eebd37c14a6338b 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.autistici.org/ai3/tools/assetmon
 go 1.15
 
 require (
-	git.autistici.org/ai3/go-common v0.0.0-20221125154433-06304016b1da
+	git.autistici.org/ai3/go-common v0.0.0-20230201225947-3ffd6ec2b357
 	github.com/google/subcommands v1.2.0
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
 	gopkg.in/yaml.v3 v3.0.1
diff --git a/go.sum b/go.sum
index 5722953c8d8c0adc03c9bc4a8a0662a52ea173bd..003f3b7691ce684fd956cfd96119d17401c26ac0 100644
--- a/go.sum
+++ b/go.sum
@@ -56,6 +56,8 @@ git.autistici.org/ai3/go-common v0.0.0-20220814151247-39e01d32d5ee h1:EPfpfiG3vK
 git.autistici.org/ai3/go-common v0.0.0-20220814151247-39e01d32d5ee/go.mod h1:yhMB8VKJBBr+EKMft7MtqHVO73vkwdq/O5sVDTs/CNI=
 git.autistici.org/ai3/go-common v0.0.0-20221125154433-06304016b1da h1:fizdAjFv2vWz+83IoeRW2L0Shyo3dDquXyQKWRGs4jc=
 git.autistici.org/ai3/go-common v0.0.0-20221125154433-06304016b1da/go.mod h1:FTGqOGPpuoFg7TiHshYCyp5j1Ab3ek0J0KcS++vEjxw=
+git.autistici.org/ai3/go-common v0.0.0-20230201225947-3ffd6ec2b357 h1:kXIwZ3SJ8r2dvBMAnuQ8QbDiR651rg/O150iTRxKkcA=
+git.autistici.org/ai3/go-common v0.0.0-20230201225947-3ffd6ec2b357/go.mod h1:FTGqOGPpuoFg7TiHshYCyp5j1Ab3ek0J0KcS++vEjxw=
 github.com/Azure/azure-amqp-common-go/v2 v2.1.0/go.mod h1:R8rea+gJRuJR6QxTir/XuEd+YuKoUiazDC/N96FiDEU=
 github.com/Azure/azure-pipeline-go v0.2.1/go.mod h1:UGSo8XybXnIGZ3epmeBw7Jdz+HiUVpqIlpz/HKHylF4=
 github.com/Azure/azure-sdk-for-go v29.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
diff --git a/vendor/git.autistici.org/ai3/go-common/serverutil/tls.go b/vendor/git.autistici.org/ai3/go-common/serverutil/tls.go
index 21c002b8baaae892f04f481b84a23e1aa7a34067..b81b0470dc296240ac81c734791e080f8b5416dd 100644
--- a/vendor/git.autistici.org/ai3/go-common/serverutil/tls.go
+++ b/vendor/git.autistici.org/ai3/go-common/serverutil/tls.go
@@ -123,6 +123,7 @@ func (c *TLSServerConfig) TLSConfig() (*tls.Config, error) {
 		CipherSuites:             serverCiphers,
 		MinVersion:               tls.VersionTLS12,
 		PreferServerCipherSuites: true,
+		NextProtos:               []string{"h2", "http/1.1"},
 	}
 
 	// Require client certificates if a CA is specified.
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 18528b808b79bbc427cba1892de39a3fd81721b6..e2e6458fb8fd3048656c1cc0b4d4a81473f3291f 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1,4 +1,4 @@
-# git.autistici.org/ai3/go-common v0.0.0-20221125154433-06304016b1da
+# git.autistici.org/ai3/go-common v0.0.0-20230201225947-3ffd6ec2b357
 ## explicit
 git.autistici.org/ai3/go-common
 git.autistici.org/ai3/go-common/clientutil