diff --git a/pkgs/by-name/ip/ipv6calc/package.nix b/pkgs/by-name/ip/ipv6calc/package.nix
index 53059e5567be..5c8a4cb73be0 100644
--- a/pkgs/by-name/ip/ipv6calc/package.nix
+++ b/pkgs/by-name/ip/ipv6calc/package.nix
@@ -12,13 +12,13 @@
 
 stdenv.mkDerivation rec {
   pname = "ipv6calc";
-  version = "4.3.0";
+  version = "4.3.1";
 
   src = fetchFromGitHub {
     owner = "pbiering";
     repo = pname;
     rev = version;
-    sha256 = "sha256-ObJn7T7dGp6HjICWHWAbJjgHM08FrJx31AxIMmIexuQ=";
+    sha256 = "sha256-zQ8azAd6q7mY3Jtx58cI2OL/xNZi+aA03y5QWHWjnm4=";
   };
 
   buildInputs = [