diff --git a/pkgs/development/python-modules/pykulersky/default.nix b/pkgs/development/python-modules/pykulersky/default.nix
index 51973fde07a1..6c1d9bf00fae 100644
--- a/pkgs/development/python-modules/pykulersky/default.nix
+++ b/pkgs/development/python-modules/pykulersky/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "pykulersky";
-  version = "0.5.4";
+  version = "0.5.5";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     owner = "emlove";
     repo = pname;
     rev = version;
-    hash = "sha256-voD4tR+k5TKGjLXFK94GJy4+wUoP2cSFc5BWkCiinOg=";
+    hash = "sha256-coO+WBnv5HT14ym719qr3Plm1JuiaNdAvD1QVPj65oU=";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/pyzerproc/default.nix b/pkgs/development/python-modules/pyzerproc/default.nix
index d79ed3320814..a453014fe8be 100644
--- a/pkgs/development/python-modules/pyzerproc/default.nix
+++ b/pkgs/development/python-modules/pyzerproc/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "pyzerproc";
-  version = "0.4.11";
+  version = "0.4.12";
   format = "setuptools";
 
   disabled = pythonOlder "3.9";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     owner = "emlove";
     repo = pname;
     rev = "refs/tags/${version}";
-    hash = "sha256-FNiq/dbh5PMTxnKCKDSHEvllehAEUYvWZS+OyP3lSW8=";
+    hash = "sha256-vS0sk/KjDhWispZvCuGlmVLLfeFymHqxwNzNqNRhg6k=";
   };
 
   postPatch = ''