diff --git a/pkgs/tools/networking/whois/default.nix b/pkgs/tools/networking/whois/default.nix
index 0caa0af061b8..3d742a2a90cf 100644
--- a/pkgs/tools/networking/whois/default.nix
+++ b/pkgs/tools/networking/whois/default.nix
@@ -1,14 +1,14 @@
 { lib, stdenv, fetchFromGitHub, perl, gettext, pkg-config, libidn2, libiconv }:
 
 stdenv.mkDerivation rec {
-  version = "5.5.10";
+  version = "5.5.11";
   pname = "whois";
 
   src = fetchFromGitHub {
     owner = "rfc1036";
     repo = "whois";
     rev = "v${version}";
-    sha256 = "179hgmh9yqk8jq26ybik4cr3lgryd5p6kdwccc3r7mfssk3yp8lz";
+    sha256 = "sha256-+fNld+stSniuQV2zx+Qd4s2ZSwNLmnve/tXg36MC2nM=";
   };
 
   nativeBuildInputs = [ perl gettext pkg-config ];