diff --git a/pkgs/development/ocaml-modules/ocamlformat/generic.nix b/pkgs/development/ocaml-modules/ocamlformat/generic.nix
index 215c0268562b..ca5c78bca7d9 100644
--- a/pkgs/development/ocaml-modules/ocamlformat/generic.nix
+++ b/pkgs/development/ocaml-modules/ocamlformat/generic.nix
@@ -1,6 +1,6 @@
-{ lib, fetchurl, version, astring, base, camlp-streams, cmdliner_1_0
+{ lib, fetchurl, version ? "0.26.1", astring, base, camlp-streams, cmdliner_1_0
 , cmdliner_1_1, csexp, dune-build-info, either, fix, fpath, menhirLib, menhirSdk
-, ocaml-version, ocp-indent, odoc-parser, result, stdio, uuseg, uutf }:
+, ocaml-version, ocp-indent, odoc-parser, result, stdio, uuseg, uutf, ... }:
 
 # The ocamlformat package have been split into two in version 0.25.1:
 # one for the library and one for the executable.
@@ -23,9 +23,12 @@ rec {
       "0.24.1" = "sha256-AjQl6YGPgOpQU3sjcaSnZsFJqZV9BYB+iKAE0tX0Qc4=";
       "0.25.1" = "sha256-3I8qMwyjkws2yssmI7s2Dti99uSorNKT29niJBpv0z0=";
       "0.26.0" = "sha256-AxSUq3cM7xCo9qocvrVmDkbDqmwM1FexEP7IWadeh30=";
+      "0.26.1" = "sha256-2gBuQn8VuexhL7gI1EZZm9m3w+4lq+s9VVdHpw10xtc=";
     }."${version}";
   };
 
+  inherit version;
+
   odoc-parser_v = odoc-parser.override {
     version = if lib.versionAtLeast version "0.24.0" then
       "2.0.0"
diff --git a/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-lib.nix b/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-lib.nix
index cefae4af027c..9e271fe186b5 100644
--- a/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-lib.nix
+++ b/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-lib.nix
@@ -1,6 +1,7 @@
-{ lib, callPackage, buildDunePackage, menhir, version ? "0.25.1" }:
+# Version can be selected with the 'version' argument, see generic.nix.
+{ lib, callPackage, buildDunePackage, menhir, ... }@args:
 
-let inherit (callPackage ./generic.nix { inherit version; }) src library_deps;
+let inherit (callPackage ./generic.nix args) src version library_deps;
 
 in assert (lib.versionAtLeast version "0.25.1");
 
diff --git a/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-rpc-lib.nix b/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-rpc-lib.nix
index a4492b2ead38..e1f5f29aa2fb 100644
--- a/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-rpc-lib.nix
+++ b/pkgs/development/ocaml-modules/ocamlformat/ocamlformat-rpc-lib.nix
@@ -1,25 +1,16 @@
-{ lib, fetchurl, buildDunePackage, ocaml, csexp, sexplib0 }:
+# Version can be selected with the 'version' argument, see generic.nix.
+{ lib, fetchurl, buildDunePackage, ocaml, csexp, sexplib0, callPackage, ... }@args:
 
-# for compat with ocaml-lsp
-let source =
-  if lib.versionAtLeast ocaml.version "4.13"
-  then {
-    version = "0.26.0";
-    sha256 = "sha256-AxSUq3cM7xCo9qocvrVmDkbDqmwM1FexEP7IWadeh30=";
-  } else {
-    version = "0.20.0";
-    sha256 = "sha256-JtmNCgwjbCyUE4bWqdH5Nc2YSit+rekwS43DcviIfgk=";
-  };
-in
+let
+  # for compat with ocaml-lsp
+  version_arg =
+    if lib.versionAtLeast ocaml.version "4.13" then {} else { version = "0.20.0"; };
 
-buildDunePackage rec {
+  inherit (callPackage ./generic.nix (args // version_arg)) src version;
+
+in buildDunePackage rec {
   pname = "ocamlformat-rpc-lib";
-  inherit (source) version;
-
-  src = fetchurl {
-    url = "https://github.com/ocaml-ppx/ocamlformat/releases/download/${version}/ocamlformat-${version}.tbz";
-    inherit (source) sha256;
-  };
+  inherit src version;
 
   minimalOCamlVersion = "4.08";
   duneVersion = "3";
diff --git a/pkgs/development/ocaml-modules/ocamlformat/ocamlformat.nix b/pkgs/development/ocaml-modules/ocamlformat/ocamlformat.nix
index a2456dbef3b9..4c3b6607737d 100644
--- a/pkgs/development/ocaml-modules/ocamlformat/ocamlformat.nix
+++ b/pkgs/development/ocaml-modules/ocamlformat/ocamlformat.nix
@@ -1,3 +1,4 @@
+# Version can be selected with the 'version' argument, see generic.nix.
 { lib
 , callPackage
 , buildDunePackage
@@ -5,10 +6,10 @@
 , re
 , ocamlformat-lib
 , menhir
-, version ? "0.26.0"
-}:
+, ...
+}@args:
 
-let inherit (callPackage ./generic.nix { inherit version; }) src library_deps;
+let inherit (callPackage ./generic.nix args) src version library_deps;
 in
 
 lib.throwIf (lib.versionAtLeast ocaml.version "5.0" && !lib.versionAtLeast version "0.23")
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 047577557659..1173079caaec 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16896,7 +16896,7 @@ with pkgs;
     ocamlformat # latest version
     ocamlformat_0_19_0 ocamlformat_0_20_0 ocamlformat_0_20_1 ocamlformat_0_21_0
     ocamlformat_0_22_4 ocamlformat_0_23_0 ocamlformat_0_24_1 ocamlformat_0_25_1
-    ocamlformat_0_26_0;
+    ocamlformat_0_26_0 ocamlformat_0_26_1;
 
   inherit (ocamlPackages) odig;
 
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 01010c77061b..95c2ea7b4185 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1273,6 +1273,7 @@ let
     ocamlformat_0_24_1 = ocamlformat.override { version = "0.24.1"; };
     ocamlformat_0_25_1 = ocamlformat.override { version = "0.25.1"; };
     ocamlformat_0_26_0 = ocamlformat.override { version = "0.26.0"; };
+    ocamlformat_0_26_1 = ocamlformat.override { version = "0.26.1"; };
 
     ocamlformat = callPackage ../development/ocaml-modules/ocamlformat/ocamlformat.nix {};