diff --git a/pkgs/development/python-modules/kombu/default.nix b/pkgs/development/python-modules/kombu/default.nix
index 28fe591d80c2..ee023a5e34bc 100644
--- a/pkgs/development/python-modules/kombu/default.nix
+++ b/pkgs/development/python-modules/kombu/default.nix
@@ -6,7 +6,7 @@
 , case
 , fetchPypi
 , importlib-metadata
-, Pyro4
+, pyro4
 , pytestCheckHook
 , pythonOlder
 , pytz
@@ -36,7 +36,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     azure-servicebus
     case
-    Pyro4
+    pyro4
     pytestCheckHook
     pytz
   ];
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index 79f4324bda72..945178c6da06 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -196,6 +196,7 @@ mapAliases ({
   pyroute2-nftables = throw "pyroute2 migrated back to a single package scheme in version 0.7.1"; # added 2022-07-16
   pyroute2-nslink = throw "pyroute2 migrated back to a single package scheme in version 0.7.1"; # added 2022-07-16
   pyroute2-protocols = throw "pyroute2 migrated back to a single package scheme in version 0.7.1"; # added 2022-07-16
+  Pyro4 = pyro4; # added 2023-02-19
   PyRSS2Gen = pyrss2gen; # added 2023-02-19
   pysmart-smartx = pysmart; # added 2021-10-22
   pyspotify = throw "pyspotify has been removed because Spotify stopped supporting libspotify"; # added 2022-05-29
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 5daebbb95ce3..4026082bc3f1 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8733,7 +8733,7 @@ self: super: with self; {
 
   pyrmvtransport = callPackage ../development/python-modules/pyrmvtransport { };
 
-  Pyro4 = callPackage ../development/python-modules/pyro4 { };
+  pyro4 = callPackage ../development/python-modules/pyro4 { };
 
   Pyro5 = callPackage ../development/python-modules/pyro5 { };