diff --git a/pkgs/development/ocaml-modules/get-activity/default.nix b/pkgs/development/ocaml-modules/get-activity/default.nix
new file mode 100644
index 000000000000..dbd585f57800
--- /dev/null
+++ b/pkgs/development/ocaml-modules/get-activity/default.nix
@@ -0,0 +1,38 @@
+{
+  lib,
+  buildDunePackage,
+  get-activity-lib,
+  ppx_expect,
+  cmdliner,
+  dune-build-info,
+  fmt,
+  logs,
+  alcotest
+}:
+
+buildDunePackage rec {
+  pname = "get-activity";
+  inherit (get-activity-lib) version src;
+
+  minimalOCamlVersion = "4.08";
+
+  buildInputs = [
+    get-activity-lib
+    cmdliner
+    dune-build-info
+    fmt
+    logs
+  ];
+
+  checkInputs = [ ppx_expect alcotest ];
+
+  doCheck = true;
+
+  meta = {
+    homepage = "https://github.com/tarides/get-activity";
+    description = "Collect activity and format as markdown for a journal";
+    license = lib.licenses.mit;
+    changelog = "https://github.com/tarides/get-activity/releases/tag/${version}";
+    maintainers = with lib.maintainers; [ zazedd ];
+  };
+}
diff --git a/pkgs/development/ocaml-modules/get-activity/lib.nix b/pkgs/development/ocaml-modules/get-activity/lib.nix
new file mode 100644
index 000000000000..7f3fe161a6d2
--- /dev/null
+++ b/pkgs/development/ocaml-modules/get-activity/lib.nix
@@ -0,0 +1,52 @@
+{
+  lib,
+  buildDunePackage,
+  fetchFromGitHub,
+  ppx_expect,
+  astring,
+  curly,
+  fmt,
+  logs,
+  ppx_yojson_conv,
+  ppx_yojson_conv_lib,
+  yojson,
+  alcotest
+}:
+
+buildDunePackage rec {
+  pname = "get-activity-lib";
+  version = "2.0.1";
+
+  src = fetchFromGitHub {
+    owner = "tarides";
+    repo = "get-activity";
+    rev = version;
+    hash = "sha256-QU/LPIxcem5nFvSxcNApOuBu6UHqLHIXVSOJ2UT0eKA=";
+  };
+
+  minimalOCamlVersion = "4.08";
+
+  buildInputs = [ ppx_yojson_conv ];
+
+  propagatedBuildInputs = [
+    astring
+    curly
+    fmt
+    logs
+    ppx_yojson_conv_lib
+    yojson
+  ];
+
+  checkInputs = [ ppx_expect alcotest ];
+
+  doCheck = true;
+
+  meta = {
+    homepage = "https://github.com/tarides/get-activity";
+    description = "Collect activity and format as markdown for a journal (lib)";
+    license = lib.licenses.mit;
+    changelog = "https://github.com/tarides/get-activity/releases/tag/${version}";
+    maintainers = with lib.maintainers; [ zazedd ];
+  };
+}
+
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index d516da1b12e0..0939db097e0b 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -585,6 +585,10 @@ let
 
     genspio = callPackage ../development/ocaml-modules/genspio { };
 
+    get-activity = callPackage ../development/ocaml-modules/get-activity { };
+
+    get-activity-lib = callPackage ../development/ocaml-modules/get-activity/lib.nix { };
+
     getopt = callPackage ../development/ocaml-modules/getopt { };
 
     gettext-camomile = callPackage ../development/ocaml-modules/ocaml-gettext/camomile.nix { };