diff --git a/pkgs/development/python-modules/pyrad/default.nix b/pkgs/development/python-modules/pyrad/default.nix
index 8a7074888716..7f96cb627008 100644
--- a/pkgs/development/python-modules/pyrad/default.nix
+++ b/pkgs/development/python-modules/pyrad/default.nix
@@ -6,7 +6,19 @@
 , netaddr
 , six
 , unittestCheckHook
+, fetchPypi
 }:
+let
+  netaddr_0_8_0 = netaddr.overridePythonAttrs (oldAttrs: rec {
+    version = "0.8.0";
+
+    src = fetchPypi {
+      pname = "netaddr";
+      inherit version;
+      hash = "sha256-1sxXx6B7HZ0ukXqos2rozmHDW6P80bg8oxxaDuK1okM=";
+    };
+  });
+in
 
 buildPythonPackage rec {
   pname = "pyrad";
@@ -33,14 +45,21 @@ buildPythonPackage rec {
   ];
 
   propagatedBuildInputs = [
-    netaddr
+    netaddr_0_8_0
     six
   ];
-
   preCheck = ''
     substituteInPlace tests/testServer.py \
-      --replace "def testBind(self):" "def dontTestBind(self):" \
-      --replace "def testBindv6(self):" "def dontTestBindv6(self):"
+      --replace-warn "def testBind(self):" "def dontTestBind(self):" \
+      --replace-warn "def testBindv6(self):" "def dontTestBindv6(self):" \
+
+    # A lot of test methods have been deprecated since Python 3.1
+    # and have been removed in Python 3.12.
+    # https://docs.python.org/3/whatsnew/3.11.html#pending-removal-in-python-3-12
+    substituteInPlace tests/*.py \
+      --replace-quiet "self.failUnless"   "self.assertTrue" \
+      --replace-quiet "self.failIf"       "self.assertFalse" \
+      --replace-quiet "self.assertEquals" "self.assertEqual"
   '';
 
   nativeCheckInputs = [