diff --git a/pkgs/servers/mail/opensmtpd/default.nix b/pkgs/servers/mail/opensmtpd/default.nix
index 76b247cfd8414..83365dc099c59 100644
--- a/pkgs/servers/mail/opensmtpd/default.nix
+++ b/pkgs/servers/mail/opensmtpd/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchurl, autoconf, automake, libtool, bison
-, libasr, libevent, zlib, libressl, db, pam, nixosTests
+, libasr, libevent, zlib, openssl, db, pam, nixosTests
 }:
 
 stdenv.mkDerivation rec {
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   version = "6.6.4p1";
 
   nativeBuildInputs = [ autoconf automake libtool bison ];
-  buildInputs = [ libasr libevent zlib libressl db pam ];
+  buildInputs = [ libasr libevent zlib openssl db pam ];
 
   src = fetchurl {
     url = "https://www.opensmtpd.org/archives/${pname}-${version}.tar.gz";