diff --git a/pkgs/development/python-modules/rfc3161-client/default.nix b/pkgs/development/python-modules/rfc3161-client/default.nix
index ab9df7c1aadd..9d8dfdc33826 100644
--- a/pkgs/development/python-modules/rfc3161-client/default.nix
+++ b/pkgs/development/python-modules/rfc3161-client/default.nix
@@ -9,20 +9,20 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "rfc3161-client";
-  version = "1.0.5";
+  version = "1.0.6";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "trailofbits";
     repo = "rfc3161-client";
-    tag = "v${version}";
-    hash = "sha256-EF4d9MnBhWt99vy2MOK+u0aUQ3ZEH/8mYezlWQtGvhU=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-8OjohrHqUgsKXRZ28Au6Un6Wlzh81XVSQosoQC2f+Fs=";
   };
 
   cargoDeps = rustPlatform.fetchCargoVendor {
-    inherit src pname;
+    inherit (finalAttrs) src pname;
     hash = "sha256-jQsogV+qR0jAkHz/Slg9oBO/f96osU8YcjuaX4ZJQTk=";
   };
 
@@ -50,7 +50,7 @@ buildPythonPackage rec {
     maintainers = with lib.maintainers; [ bot-wxt1221 ];
     license = lib.licenses.asl20;
     platforms = lib.platforms.all;
-    changelog = "https://github.com/trailofbits/rfc3161-client/releases/tag/v${version}";
+    changelog = "https://github.com/trailofbits/rfc3161-client/releases/tag/${finalAttrs.src.tag}";
     description = "Opinionated Python RFC3161 Client";
   };
-}
+})