diff --git a/pkgs/development/ocaml-modules/ocaml-lsp/jsonrpc.nix b/pkgs/development/ocaml-modules/ocaml-lsp/jsonrpc.nix
index a6867aac63ad..004b7854107e 100644
--- a/pkgs/development/ocaml-modules/ocaml-lsp/jsonrpc.nix
+++ b/pkgs/development/ocaml-modules/ocaml-lsp/jsonrpc.nix
@@ -12,8 +12,8 @@
 let params =
   if lib.versionAtLeast ocaml.version "4.12"
   then {
-    version = "1.7.0";
-    sha256 = "1va2zj41znsr94bdw485vak96zrcvqwcrqf1sy8zipb6hdhbchya";
+    version = "1.8.3";
+    sha256 = "sha256-WO9ap78XZxJCi04LEBX+r21nfL2UdPiCLRMrJSI7FOk=";
   } else {
     version = "1.4.1";
     sha256 = "1ssyazc0yrdng98cypwa9m3nzfisdzpp7hqnx684rqj8f0g3gs6f";
diff --git a/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix b/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix
index 869e9f633540..cd01116b8209 100644
--- a/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix
+++ b/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix
@@ -13,6 +13,7 @@
 , pp
 , csexp
 , cmdliner
+, ocamlformat-rpc-lib
 }:
 
 buildDunePackage rec {
@@ -35,7 +36,7 @@ buildDunePackage rec {
 
   buildInputs =
     if lib.versionAtLeast version "1.7.0" then
-      [ pp re ppx_yojson_conv_lib octavius dune-build-info omd cmdliner ]
+      [ pp re ppx_yojson_conv_lib octavius dune-build-info omd cmdliner ocamlformat-rpc-lib ]
     else
       [ cppo
         ppx_yojson_conv_lib