diff --git a/pkgs/development/python-modules/objsize/default.nix b/pkgs/development/python-modules/objsize/default.nix
new file mode 100644
index 000000000000..18efa2b3494a
--- /dev/null
+++ b/pkgs/development/python-modules/objsize/default.nix
@@ -0,0 +1,24 @@
+{ lib
+, python
+, buildPythonPackage
+, fetchFromGitHub
+}:
+
+buildPythonPackage rec {
+  pname = "objsize";
+  version = "0.6.1";
+
+  src = fetchFromGitHub {
+    owner = "liran-funaro";
+    repo = pname;
+    rev = version;
+    hash = "sha256-FgRB7EENwNOlC7ynIRxcwucoywNjko494s75kOp5O+w=";
+  };
+
+  meta = with lib; {
+    description = "Traversal over objects subtree and calculate the total size";
+    homepage = "https://github.com/liran-funaro/objsize";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ ocfox ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ed855fe09640..8ae3d3eee844 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6528,6 +6528,8 @@ self: super: with self; {
 
   objax = callPackage ../development/python-modules/objax { };
 
+  objsize = callPackage ../development/python-modules/objsize { };
+
   objgraph = callPackage ../development/python-modules/objgraph {
     # requires both the graphviz package and python package
     graphvizPkgs = pkgs.graphviz;