diff --git a/protocol-9p-tool.opam b/protocol-9p-tool.opam
index 090c6ca..c3b87f1 100644
--- a/protocol-9p-tool.opam
+++ b/protocol-9p-tool.opam
@@ -8,13 +8,13 @@ bug-reports:  "https://github.com/mirage/ocaml-9p/issues"
 doc:          "https://mirage.github.io/ocaml-9p/"
 
 build: [
-  ["jbuilder" "subst" "-p" name "--name" name] {pinned}
+  ["jbuilder" "subst"] {pinned}
   ["jbuilder" "build" "-p" name "-j" jobs]
 ]
 depends: [
-  "jbuilder" {build & >="1.0+beta7"}
-  "protocol-9p"
-  "protocol-9p-unix"
+  "jbuilder" {build & >= "1.0+beta10"}
+  "protocol-9p" {= "0.11.2"}
+  "protocol-9p-unix" {= "0.11.2"}
   "base-bytes"
   "rresult"
   "logs" {>= "0.5.0"}
@@ -24,6 +24,5 @@ depends: [
   "lambda-term"
   "win-error"
   "cmdliner"
-  "io-page"
 ]
 available: [ocaml-version >= "4.03.0"]
diff --git a/protocol-9p-unix.opam b/protocol-9p-unix.opam
index 6286c89..fed0d08 100644
--- a/protocol-9p-unix.opam
+++ b/protocol-9p-unix.opam
@@ -8,11 +8,11 @@ bug-reports:  "https://github.com/mirage/ocaml-9p/issues"
 doc:          "https://mirage.github.io/ocaml-9p/"
 
 build: [
-  ["jbuilder" "subst" "-p" name "--name" name] {pinned}
+  ["jbuilder" "subst"] {pinned}
   ["jbuilder" "build" "-p" name "-j" jobs]
 ]
 depends: [
-  "jbuilder" {build & >="1.0+beta7"}
+  "jbuilder" {build & >="1.0+beta10"}
   "protocol-9p"
   "base-bytes"
   "cstruct" {>= "1.9.0"}
@@ -31,6 +31,7 @@ depends: [
   "fmt"
   "logs" {>= "0.5.0"}
   "win-error"
+  "io-page-unix" {>= "2.0.0"}
   "ppx_deriving" {build}
   "ppx_sexp_conv" {build}
   "ppx_tools" {build}
diff --git a/protocol-9p.opam b/protocol-9p.opam
index 65aee30..17b97d4 100644
--- a/protocol-9p.opam
+++ b/protocol-9p.opam
@@ -8,15 +8,15 @@ bug-reports:  "https://github.com/mirage/ocaml-9p/issues"
 doc:          "https://mirage.github.io/ocaml-9p/"
 
 build: [
-  ["jbuilder" "subst" "-p" name "--name" name] {pinned}
+  ["jbuilder" "subst"] {pinned}
   ["jbuilder" "build" "-p" name "-j" jobs]
 ]
 depends: [
-  "jbuilder" {build & >="1.0+beta7"}
+  "jbuilder" {build & >= "1.0+beta10"}
   "base-bytes"
-  "cstruct" {>= "1.9.0"}
-  "cstruct-lwt"
-  "sexplib" {> "113.00.00" }
+  "cstruct" {>= "3.0.0"}
+  "cstruct-lwt" {>= "3.0.0"}
+  "sexplib" {> "113.00.00"}
   "result"
   "rresult"
   "mirage-flow-lwt"