diff --git a/tools/go.mod b/tools/go.mod
index 987c2d7..fd5993a 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 v0.0.0-20240419143920-8a0c643c57cc
+	github.com/creachadair/wschannel v0.0.0-20240811160115-1d283aa25327
 )
 
 require (
+	github.com/coder/websocket v1.8.12 // indirect
 	github.com/creachadair/mds v0.16.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
-	nhooyr.io/websocket v1.8.17 // indirect
 )
diff --git a/tools/go.sum b/tools/go.sum
index 2a3a5b3..6f0ddfa 100644
--- a/tools/go.sum
+++ b/tools/go.sum
@@ -1,14 +1,14 @@
+github.com/coder/websocket v1.8.12 h1:5bUXkEPPIbewrnkU8LTCLVaxi4N4J8ahufH2vlo4NAo=
+github.com/coder/websocket v1.8.12/go.mod h1:LNVeNrXQZfe5qhS9ALED3uA+l5pPqvwXg3CKoDBB2gs=
 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 v0.16.0 h1:v6DlvKXClowXFg4hkjLCR1FEFiREMf0qgX+Lm5GsEKk=
 github.com/creachadair/mds v0.16.0/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/creachadair/wschannel v0.0.0-20240811160115-1d283aa25327 h1:BU4vsFp2qnqXblBgjTp2pXWcLhZuCiuLEYiauUEFS+Q=
+github.com/creachadair/wschannel v0.0.0-20240811160115-1d283aa25327/go.mod h1:d/L4pkQerqj86CtzScyC4FdqQV1C1wXI18nUWCtO5RU=
 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=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
 golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-nhooyr.io/websocket v1.8.17 h1:KEVeLJkUywCKVsnLIDlD/5gtayKp8VoCkksHCGGfT9Y=
-nhooyr.io/websocket v1.8.17/go.mod h1:rN9OFWIUwuxg4fR5tELlYC04bXYowCP9GX47ivo2l+c=