diff --git a/teuthology/task/valgrind.supp b/teuthology/task/valgrind.supp
index 04d40940d16..1da125920d2 100644
--- a/teuthology/task/valgrind.supp
+++ b/teuthology/task/valgrind.supp
@@ -38,6 +38,13 @@
 	fun:OS_LibInit
 	fun:FCGX_Init
 }
+{
+	ignore libnss3 leaks
+	Memcheck:Leak
+	...
+	obj:*libnss3*
+	...
+}
 {
         strptime suckage
         Memcheck:Cond