diff --git a/pkgs/applications/version-management/bumpver/default.nix b/pkgs/applications/version-management/bumpver/default.nix
new file mode 100644
index 000000000000..6aa4bcc52bc3
--- /dev/null
+++ b/pkgs/applications/version-management/bumpver/default.nix
@@ -0,0 +1,29 @@
+{ lib, python3, git, mercurial}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "bumpver";
+  version = "2020.1107";
+
+  src = python3.pkgs.fetchPypi {
+    inherit pname version;
+    sha256 = "75704333a8d1699e2cadcf1fcd3027a2cab6837ae343af10a61c6eef4e0313d7";
+  };
+
+  prePatch = ''
+    substituteInPlace setup.py \
+      --replace "if any(arg.startswith(\"bdist\") for arg in sys.argv):" ""\
+      --replace "import lib3to6" ""\
+      --replace "package_dir = lib3to6.fix(package_dir)" ""
+  '';
+
+  propagatedBuildInputs = with python3.pkgs; [ pathlib2 click toml lexid colorama setuptools ];
+
+  checkInputs = [ python3.pkgs.pytestCheckHook git mercurial];
+
+  meta = with lib; {
+    description = "Bump version numbers in project files";
+    homepage = "https://pypi.org/project/bumpver/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ kfollesdal ];
+  };
+}
diff --git a/pkgs/development/python-modules/lexid/default.nix b/pkgs/development/python-modules/lexid/default.nix
new file mode 100644
index 000000000000..4307d52d8913
--- /dev/null
+++ b/pkgs/development/python-modules/lexid/default.nix
@@ -0,0 +1,22 @@
+{ lib, python, pythonOlder, buildPythonPackage, fetchPypi, pytestCheckHook, click }:
+
+buildPythonPackage rec {
+  pname = "lexid";
+  version = "2020.1005";
+  disabled = pythonOlder "3.6";
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "52333a2b9ebd14aa0dfeb33de72bd159c2dc31adb9c59cddfc486e2b69bfdcd1";
+  };
+
+  propagatedBuildInputs = [ click ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  meta = with lib; {
+    description = "micro library to increment lexically ordered numerical ids";
+    homepage = "https://pypi.org/project/lexid/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ kfollesdal ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8666e20deafb..4420d2f0bc96 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2786,6 +2786,8 @@ in
     inherit (pythonPackages) gyp;
   };
 
+  bumpver = callPackage ../applications/version-management/bumpver { };
+
   bup = callPackage ../tools/backup/bup { };
 
   burp = callPackage ../tools/backup/burp { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ad09b13d6c7d..500ed5a252c4 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3371,6 +3371,8 @@ in {
 
   leveldb = callPackage ../development/python-modules/leveldb { };
 
+  lexid = callPackage ../development/python-modules/lexid { };
+
   libagent = callPackage ../development/python-modules/libagent { };
 
   pa-ringbuffer = callPackage ../development/python-modules/pa-ringbuffer { };