diff --git a/go.mod b/go.mod
index d94ec6ce..cbabd131 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.13
 require (
 	github.com/agext/levenshtein v1.2.2 // indirect
 	github.com/apparentlymart/go-textseg v1.0.0
-	github.com/creachadair/jrpc2 v0.26.1
+	github.com/creachadair/jrpc2 v0.27.0
 	github.com/fsnotify/fsnotify v1.5.1
 	github.com/google/go-cmp v0.5.6
 	github.com/google/uuid v1.2.0 // indirect
diff --git a/go.sum b/go.sum
index 88d78615..1e056fc0 100644
--- a/go.sum
+++ b/go.sum
@@ -73,8 +73,8 @@ github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/creachadair/jrpc2 v0.26.1 h1:5i6kkw2hmeocwwFHjNkiQ6jePMufdhcfWOlV6ACU5y8=
-github.com/creachadair/jrpc2 v0.26.1/go.mod h1:w+GXZGc+NwsH0xsUOgeLBIIRM0jBOSTXhv28KaWGRZU=
+github.com/creachadair/jrpc2 v0.27.0 h1:QzDp+Zrq+JKM21qQblLudnxevzQZ0FrcPDIVQzcgErs=
+github.com/creachadair/jrpc2 v0.27.0/go.mod h1:w+GXZGc+NwsH0xsUOgeLBIIRM0jBOSTXhv28KaWGRZU=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -191,10 +191,6 @@ github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uG
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hashicorp/hcl-lang v0.0.0-20210803155453-7c098e4940bc/go.mod h1:xzXU6Fn+TWVaZUFxV8CyAsObi2oMgSEFAmLvCx2ArzM=
-github.com/hashicorp/hcl-lang v0.0.0-20210824132129-4bf451bad31e h1:RJJCsEHFbEh3GByXTyKvNVMRN8VRVOWd45WQfb5oddQ=
-github.com/hashicorp/hcl-lang v0.0.0-20210824132129-4bf451bad31e/go.mod h1:D7lBT7dekCcgbxzIHHBFvaRm42u5jY0pDoiC2J6A2KM=
-github.com/hashicorp/hcl-lang v0.0.0-20211006152007-86c2c237ce8d h1:5v9AxvjOjmen1wYFD1x2LpsY7d8YZSSPwYa8ahLY5bM=
-github.com/hashicorp/hcl-lang v0.0.0-20211006152007-86c2c237ce8d/go.mod h1:D7lBT7dekCcgbxzIHHBFvaRm42u5jY0pDoiC2J6A2KM=
 github.com/hashicorp/hcl-lang v0.0.0-20211007132635-f22d3c2adf6c h1:98h0kdFx2qqS8lMAbGxR+b/HO3d52NdJsIgzG6Ikucg=
 github.com/hashicorp/hcl-lang v0.0.0-20211007132635-f22d3c2adf6c/go.mod h1:D7lBT7dekCcgbxzIHHBFvaRm42u5jY0pDoiC2J6A2KM=
 github.com/hashicorp/hcl/v2 v2.10.1 h1:h4Xx4fsrRE26ohAk/1iGF/JBqRQbyUqu5Lvj60U54ys=