diff --git a/pkgs/development/python-modules/lazr/config.nix b/pkgs/development/python-modules/lazr/config.nix
index 38b0ed3e02c0..bc369705e265 100644
--- a/pkgs/development/python-modules/lazr/config.nix
+++ b/pkgs/development/python-modules/lazr/config.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , setuptools
-, lazr_delegates
+, lazr-delegates
 , zope_interface
 , pytestCheckHook
 }:
@@ -23,7 +23,7 @@ buildPythonPackage rec {
   ];
 
   propagatedBuildInputs = [
-    lazr_delegates
+    lazr-delegates
     zope_interface
   ];
 
diff --git a/pkgs/development/python-modules/lazr/delegates.nix b/pkgs/development/python-modules/lazr/delegates.nix
index 40e2e47d517d..61646cd8bc2a 100644
--- a/pkgs/development/python-modules/lazr/delegates.nix
+++ b/pkgs/development/python-modules/lazr/delegates.nix
@@ -1,7 +1,7 @@
 { buildPythonPackage, fetchPypi, nose, zope_interface }:
 
 buildPythonPackage rec {
-  pname = "lazr.delegates";
+  pname = "lazr-delegates";
   version = "2.0.4";
 
   propagatedBuildInputs = [ nose zope_interface ];
@@ -9,7 +9,8 @@ buildPythonPackage rec {
   doCheck = false;  # cannot import name 'ClassType' from 'types'
 
   src = fetchPypi {
-    inherit pname version;
+    pname = "lazr.delegates";
+    inherit version;
     sha256 = "1rdnl85j9ayp8n85l0ciip621j9dcziz5qnmv2m7krgwgcn31vfx";
   };
 }
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index f13451b38d86..9e5ec5b3810a 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -217,6 +217,7 @@ mapAliases ({
   ldap = python-ldap; # added 2022-09-16
   lammps-cython = throw "lammps-cython no longer builds and is unmaintained"; # added 2021-07-04
   lazr_config = lazr-config; # added 2023-11-03
+  lazr_delegates = lazr-delegates; # added 2023-11-03
   lazy_imports = lazy-imports; # added 2023-10-13
   lektor = throw "lektor has been promoted to a top-level attribute"; # added 2023-08-01
   logilab_astng = throw "logilab-astng has not been released since 2013 and is unmaintained"; # added 2022-11-29
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 75312f0425c7..da44a8efb570 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6040,7 +6040,7 @@ self: super: with self; {
 
   lazr-config = callPackage ../development/python-modules/lazr/config.nix { };
 
-  lazr_delegates = callPackage ../development/python-modules/lazr/delegates.nix { };
+  lazr-delegates = callPackage ../development/python-modules/lazr/delegates.nix { };
 
   lazr-restfulclient = callPackage ../development/python-modules/lazr-restfulclient { };