diff --git a/src/sched.rs b/src/sched.rs
index 91a7c42a9a..4af332034c 100644
--- a/src/sched.rs
+++ b/src/sched.rs
@@ -24,6 +24,7 @@ libc_bitflags!{
         CLONE_DETACHED,
         CLONE_UNTRACED,
         CLONE_CHILD_SETTID,
+        CLONE_NEWCGROUP,
         CLONE_NEWUTS,
         CLONE_NEWIPC,
         CLONE_NEWUSER,