diff --git a/pkgs/servers/http/hiawatha/default.nix b/pkgs/servers/http/hiawatha/default.nix
index 950faf89bedb..2ab0b12c483f 100644
--- a/pkgs/servers/http/hiawatha/default.nix
+++ b/pkgs/servers/http/hiawatha/default.nix
@@ -4,6 +4,7 @@
 , cmake
 , ninja
 , mbedtls
+, libxcrypt
 
 , enableCache     ? true     # Internal cache support.
 , enableIpV6      ? true
@@ -27,7 +28,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ninja ];
-  buildInputs = [ mbedtls ] ++ lib.optionals enableXslt [ libxslt libxml2 ];
+  buildInputs = [ mbedtls libxcrypt ] ++ lib.optionals enableXslt [ libxslt libxml2 ];
 
   prePatch = ''
     substituteInPlace CMakeLists.txt --replace SETUID ""