diff --git a/chrony.spec b/chrony.spec
index dbb5710..129f878 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -29,9 +29,9 @@ Patch2:         chrony-seccomp.patch
 # revert some hardening options in service files
 Patch3:         chrony-services.patch
 
-BuildRequires:  libcap-devel libedit-devel nettle-devel pps-tools-devel
+BuildRequires:  gnutls-devel libcap-devel libedit-devel pps-tools-devel
 BuildRequires:  gcc gcc-c++ make bison systemd gnupg2
-%{?with_nts:BuildRequires: gnutls-devel gnutls-utils}
+%{?with_nts:BuildRequires: gnutls-utils}
 %{?with_seccomp:BuildRequires: libseccomp-devel}
 
 Requires(pre):  shadow-utils
@@ -108,7 +108,10 @@ mv clknetsim-%{clknetsim_ver}* test/simulation/clknetsim
         --with-user=chrony \
         --with-hwclockfile=%{_sysconfdir}/adjtime \
         --with-pidfile=/run/chrony/chronyd.pid \
-        --with-sendmail=%{_sbindir}/sendmail
+        --with-sendmail=%{_sbindir}/sendmail \
+        --without-nettle \
+        --without-nss \
+        --without-tomcrypt
 %make_build
 
 %install