diff --git a/pkgs/by-name/sw/swh/package.nix b/pkgs/by-name/sw/swh/package.nix
index ef90e1d9cf34..6375ca0c6bd0 100644
--- a/pkgs/by-name/sw/swh/package.nix
+++ b/pkgs/by-name/sw/swh/package.nix
@@ -4,6 +4,7 @@
   withSwhPythonPackages ? [
     python3Packages.swh-auth
     python3Packages.swh-model
+    python3Packages.swh-objstorage
     python3Packages.swh-scanner
     python3Packages.swh-web-client
   ],
diff --git a/pkgs/development/python-modules/swh-objstorage/default.nix b/pkgs/development/python-modules/swh-objstorage/default.nix
new file mode 100644
index 000000000000..478bc7e07bdf
--- /dev/null
+++ b/pkgs/development/python-modules/swh-objstorage/default.nix
@@ -0,0 +1,111 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitLab,
+  setuptools,
+  setuptools-scm,
+  backports-entry-points-selectable,
+  cassandra-driver,
+  click,
+  deprecated,
+  flask,
+  iso8601,
+  msgpack,
+  mypy-extensions,
+  psycopg,
+  redis,
+  tenacity,
+  swh-core,
+  swh-model,
+  swh-perfecthash,
+  aiohttp,
+  azure-core,
+  azure-storage-blob,
+  fixtures,
+  libcloud,
+  postgresql,
+  postgresqlTestHook,
+  pytestCheckHook,
+  pytest-mock,
+  pytest-postgresql,
+  requests-mock,
+  requests-toolbelt,
+  systemd,
+  types-python-dateutil,
+  types-pyyaml,
+  types-requests,
+  util-linux,
+}:
+
+buildPythonPackage rec {
+  pname = "swh-objstorage";
+  version = "4.0.0";
+  pyproject = true;
+
+  src = fetchFromGitLab {
+    domain = "gitlab.softwareheritage.org";
+    group = "swh";
+    owner = "devel";
+    repo = "swh-objstorage";
+    tag = "v${version}";
+    hash = "sha256-c0ZH2PMT9DVnpTV5PDyX0Yw4iHiJSolEgq/bMXEwXG8=";
+  };
+
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
+
+  dependencies = [
+    backports-entry-points-selectable
+    cassandra-driver
+    click
+    deprecated
+    flask
+    iso8601
+    msgpack
+    mypy-extensions
+    psycopg
+    redis
+    tenacity
+    swh-core
+    swh-model
+    swh-perfecthash
+  ];
+
+  preCheck = ''
+    substituteInPlace swh/objstorage/backends/winery/roshard.py \
+      --replace-fail "/usr/bin/fallocate" "fallocate"
+  '';
+
+  pythonImportsCheck = [ "swh.objstorage" ];
+
+  pytestFlagsArray = [ "swh/objstorage/tests" ];
+
+  nativeCheckInputs = [
+    aiohttp
+    azure-core
+    azure-storage-blob
+    fixtures
+    libcloud
+    postgresql
+    postgresqlTestHook
+    pytestCheckHook
+    pytest-mock
+    pytest-postgresql
+    requests-mock
+    requests-toolbelt
+    systemd
+    types-python-dateutil
+    types-pyyaml
+    types-requests
+    util-linux
+  ] ++ psycopg.optional-dependencies.pool;
+
+  meta = {
+    description = "Content-addressable object storage for the Software Heritage project";
+    homepage = "https://gitlab.softwareheritage.org/swh/devel/swh-objstorage";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ drupol ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 029d037dce48..6ad96cb88104 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -16661,6 +16661,8 @@ self: super: with self; {
 
   swh-model = callPackage ../development/python-modules/swh-model { };
 
+  swh-objstorage = callPackage ../development/python-modules/swh-objstorage { };
+
   swh-perfecthash = callPackage ../development/python-modules/swh-perfecthash { };
 
   swh-scanner = callPackage ../development/python-modules/swh-scanner { };