diff --git a/go.mod b/go.mod
index 5ab709a..e6aa06f 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	golang.org/x/sync v0.7.0
 )
 
-require github.com/creachadair/mds v0.14.3
+require github.com/creachadair/mds v0.14.5
 
 go 1.21
 
diff --git a/go.sum b/go.sum
index baa2c4f..0427338 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/creachadair/mds v0.14.3 h1:yb5rf+OJJcKptGyBU/1oSRs/ybJmKKB4HTNWF8g4emc=
-github.com/creachadair/mds v0.14.3/go.mod h1:4vrFYUzTXMJpMBU+OA292I6IUxKWCCfZkgXg+/kBZMo=
+github.com/creachadair/mds v0.14.5 h1:2amuO4yCbQkaAyDoLO5iCbwbTRQZz4EpRhOejQbf4+8=
+github.com/creachadair/mds v0.14.5/go.mod h1:4vrFYUzTXMJpMBU+OA292I6IUxKWCCfZkgXg+/kBZMo=
 github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
 github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
diff --git a/tools/go.mod b/tools/go.mod
index 17c2f77..448c0b0 100644
--- a/tools/go.mod
+++ b/tools/go.mod
@@ -6,11 +6,11 @@ toolchain go1.21.0
 
 require (
 	github.com/creachadair/jrpc2 v1.2.0
-	github.com/creachadair/wschannel v0.0.0-20240402151022-6a930bf711db
+	github.com/creachadair/wschannel v0.0.0-20240419143920-8a0c643c57cc
 )
 
 require (
-	github.com/creachadair/mds v0.14.3 // indirect
+	github.com/creachadair/mds v0.14.5 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 	nhooyr.io/websocket v1.8.11 // indirect
 )
diff --git a/tools/go.sum b/tools/go.sum
index 7726d66..adf3ac4 100644
--- a/tools/go.sum
+++ b/tools/go.sum
@@ -1,9 +1,9 @@
 github.com/creachadair/jrpc2 v1.2.0 h1:SXr0OgnwM0X18P+HccJP0uT3KGSDk/BCSRlJBvE2bMY=
 github.com/creachadair/jrpc2 v1.2.0/go.mod h1:66uKSdr6tR5ZeNvkIjDSbbVUtOv0UhjS/vcd8ECP7Iw=
-github.com/creachadair/mds v0.14.3 h1:yb5rf+OJJcKptGyBU/1oSRs/ybJmKKB4HTNWF8g4emc=
-github.com/creachadair/mds v0.14.3/go.mod h1:4vrFYUzTXMJpMBU+OA292I6IUxKWCCfZkgXg+/kBZMo=
-github.com/creachadair/wschannel v0.0.0-20240402151022-6a930bf711db h1:5GyTy0D28KFyKfZeze2De9N7V5k2a2sRQqaKTf+DjVM=
-github.com/creachadair/wschannel v0.0.0-20240402151022-6a930bf711db/go.mod h1:+l64cceEVupeC9pYsogN81t2xB/aHRXQ7oEbbzfYMbk=
+github.com/creachadair/mds v0.14.5 h1:2amuO4yCbQkaAyDoLO5iCbwbTRQZz4EpRhOejQbf4+8=
+github.com/creachadair/mds v0.14.5/go.mod h1:4vrFYUzTXMJpMBU+OA292I6IUxKWCCfZkgXg+/kBZMo=
+github.com/creachadair/wschannel v0.0.0-20240419143920-8a0c643c57cc h1:qum791hcmLtoBv26ID7y/Z8ZhooVHgsRwE+GQhfo5Ks=
+github.com/creachadair/wschannel v0.0.0-20240419143920-8a0c643c57cc/go.mod h1:4v2wftOqKNLbhuuZocaXeLehdf9rmvNJtUkenv0AYZw=
 github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
 github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=