diff --git a/go.mod b/go.mod
index ebc9d12ee..dac5e0c56 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.13
 
 require (
 	github.com/apparentlymart/go-textseg v1.0.0
-	github.com/creachadair/jrpc2 v0.7.0
+	github.com/creachadair/jrpc2 v0.8.1
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/google/go-cmp v0.4.0
 	github.com/hashicorp/go-version v1.2.0
diff --git a/go.sum b/go.sum
index 70534cc2b..8378a0304 100644
--- a/go.sum
+++ b/go.sum
@@ -13,8 +13,8 @@ github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310 h1:BUAU3CGlLvorLI26
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
-github.com/creachadair/jrpc2 v0.7.0 h1:y6RIGw69axGeWI3JBaNPFWTFJ3sAoUgkVH5Gr4ND47Q=
-github.com/creachadair/jrpc2 v0.7.0/go.mod h1:yMFI6NwXGITWoWDEEdmZESIHp13SAuSkGCTBz9bSGBg=
+github.com/creachadair/jrpc2 v0.8.1 h1:YX27WgtXa9v7g0kn3oYe7gmxt7e5M3miVgEgTXoTqcY=
+github.com/creachadair/jrpc2 v0.8.1/go.mod h1:yMFI6NwXGITWoWDEEdmZESIHp13SAuSkGCTBz9bSGBg=
 github.com/creachadair/staticfile v0.1.2/go.mod h1:a3qySzCIXEprDGxk6tSxSI+dBBdLzqeBOMhZ+o2d3pM=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
diff --git a/vendor/github.com/creachadair/jrpc2/doc.go b/vendor/github.com/creachadair/jrpc2/doc.go
index 2f69ad3c4..4afdc8c04 100644
--- a/vendor/github.com/creachadair/jrpc2/doc.go
+++ b/vendor/github.com/creachadair/jrpc2/doc.go
@@ -119,7 +119,7 @@ sends them to the server, but the server does not reply.
 
 A jrpc2.Client supports sending notifications as follows:
 
-   err := cli.Notify(ctx, "Alert", map[string]string{
+   err := cli.Notify(ctx, "Alert", handler.Obj{
       "message": "A fire is burning!",
    })
 
diff --git a/vendor/github.com/creachadair/jrpc2/handler/handler.go b/vendor/github.com/creachadair/jrpc2/handler/handler.go
index 9ecf08587..a913a1c70 100644
--- a/vendor/github.com/creachadair/jrpc2/handler/handler.go
+++ b/vendor/github.com/creachadair/jrpc2/handler/handler.go
@@ -301,26 +301,13 @@ func (a Args) MarshalJSON() ([]byte, error) {
 	return json.Marshal([]interface{}(a))
 }
 
-// Obj is a wrapper that decodes object fields into concrete locations.
+// Obj is a wrapper that maps object fields into concrete locations.
 //
 // Unmarshaling a JSON text into an Obj value v succeeds if the JSON encodes an
 // object, and unmarshaling the value for each key k of the object into v[k]
 // succeeds. If k does not exist in v, it is ignored.
 //
-// Usage example:
-//
-//    var x, y int
-//    var s string
-//
-//    if err := req.UnmarshalParams(handler.Obj{
-//       "left":  &x,
-//       "right": &x,
-//       "tag":   &s,
-//    }); err != nil {
-//       return nil, err
-//    }
-//    // do useful work with x, y, and s
-//
+// Marshaling an Obj into JSON works as for an ordinary map.
 type Obj map[string]interface{}
 
 // UnmarshalJSON supports JSON unmarshaling into o.
diff --git a/vendor/github.com/creachadair/jrpc2/server/simple.go b/vendor/github.com/creachadair/jrpc2/server/simple.go
new file mode 100644
index 000000000..39e9f144a
--- /dev/null
+++ b/vendor/github.com/creachadair/jrpc2/server/simple.go
@@ -0,0 +1,43 @@
+package server
+
+import (
+	"errors"
+
+	"github.com/creachadair/jrpc2"
+	"github.com/creachadair/jrpc2/channel"
+)
+
+// A Simple server manages execution of a server for a single service instance.
+type Simple struct {
+	running bool
+	svc     Service
+	opts    *jrpc2.ServerOptions
+}
+
+// NewSimple constructs a new, unstarted *Simple instance for the given
+// service.  When run, the server will use the specified options.
+func NewSimple(svc Service, opts *jrpc2.ServerOptions) *Simple {
+	return &Simple{svc: svc, opts: opts}
+}
+
+// Run starts a server on the given channel, and blocks until it returns.  The
+// server exit status is reported to the service, and the error value returned.
+// Once Run returns, it can be run again with a new channel.
+//
+// If the caller does not need the error value and does not want to wait for
+// the server to complete, call Run in a goroutine.
+func (s *Simple) Run(ch channel.Channel) error {
+	if s.running { // sanity check
+		return errors.New("server is already running")
+	}
+	assigner, err := s.svc.Assigner()
+	if err != nil {
+		return err
+	}
+	s.running = true
+	srv := jrpc2.NewServer(assigner, s.opts).Start(ch)
+	stat := srv.WaitStatus()
+	s.svc.Finish(stat)
+	s.running = false
+	return stat.Err
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index b863074d1..f6ae76321 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -10,7 +10,7 @@ github.com/apparentlymart/go-textseg/v12/textseg
 github.com/armon/go-radix
 # github.com/bgentry/speakeasy v0.1.0
 github.com/bgentry/speakeasy
-# github.com/creachadair/jrpc2 v0.7.0
+# github.com/creachadair/jrpc2 v0.8.1
 github.com/creachadair/jrpc2
 github.com/creachadair/jrpc2/channel
 github.com/creachadair/jrpc2/code