diff --git a/tools/valgrind.supp b/tools/valgrind.supp
index da3d4a8d6d..d2cb4118de 100644
--- a/tools/valgrind.supp
+++ b/tools/valgrind.supp
@@ -23,6 +23,15 @@
    fun:cap_init
    fun:zprivs_caps_init
 }
+{
+   <zprivs_init leak in library code we do not control>
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   ...
+   fun:getgrouplist
+   fun:zprivs_init
+   fun:frr_init
+}
 {
    <sqlite3 leak in a function we do not control>
    Memcheck:Leak