diff --git a/pkgs/by-name/su/subnetcalc/package.nix b/pkgs/by-name/su/subnetcalc/package.nix
index 075e044594cb..38801ab0df7d 100644
--- a/pkgs/by-name/su/subnetcalc/package.nix
+++ b/pkgs/by-name/su/subnetcalc/package.nix
@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "subnetcalc";
-  version = "2.6.2";
+  version = "2.6.4";
 
   src = fetchFromGitHub {
     owner = "dreibh";
     repo = "subnetcalc";
     tag = "subnetcalc-${finalAttrs.version}";
-    hash = "sha256-TiPnNfETb69snl/8LXaIfjAq92meahvfIWSJLSrlxcc=";
+    hash = "sha256-FpDbU9kqen+NsJd8bSMUkTeq441+BXTKx/xKwcEBk10=";
   };
 
   nativeBuildInputs = [