diff --git a/nixos/modules/services/system/nscd.conf b/nixos/modules/services/system/nscd.conf
index 304be0942dc4..ce583816e156 100644
--- a/nixos/modules/services/system/nscd.conf
+++ b/nixos/modules/services/system/nscd.conf
@@ -19,6 +19,14 @@ check-files             group           yes
 persistent              group           no
 shared                  group           yes
 
+enable-cache            netgroup        yes
+positive-time-to-live   netgroup        0
+negative-time-to-live   netgroup        0
+suggested-size          netgroup        211
+check-files             netgroup        yes
+persistent              netgroup        no
+shared                  netgroup        yes
+
 enable-cache            hosts           yes
 positive-time-to-live   hosts           600
 negative-time-to-live   hosts           0