diff --git a/pkgs/os-specific/linux/pam_mysql/default.nix b/pkgs/os-specific/linux/pam_mysql/default.nix
index 807899cf2b28..036d4b20cb4c 100644
--- a/pkgs/os-specific/linux/pam_mysql/default.nix
+++ b/pkgs/os-specific/linux/pam_mysql/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, meson, ninja, pam, pkg-config, libmysqlclient, mariadb }:
+{ lib, stdenv, fetchFromGitHub, meson, ninja, pam, pkg-config, libmysqlclient, mariadb, libxcrypt }:
 
 stdenv.mkDerivation rec {
   pname = "pam_mysql";
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ meson pkg-config ninja ];
-  buildInputs = [ pam libmysqlclient mariadb ];
+  buildInputs = [ pam libmysqlclient mariadb libxcrypt ];
 
   meta = with lib; {
     description = "PAM authentication module against a MySQL database";