diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index daf5641f0304d5a13662a00bc85521f4aa7e339a..46ed80712e769d4bb7592a8da696c8117d55a158 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -248,6 +248,8 @@ pub const ABMON_10: ::nl_item = 0x20017;
 pub const ABMON_11: ::nl_item = 0x20018;
 pub const ABMON_12: ::nl_item = 0x20019;
 
+pub const CLONE_NEWCGROUP: ::c_int = 0x02000000;
+
 pub const MON_1: ::nl_item = 0x2001A;
 pub const MON_2: ::nl_item = 0x2001B;
 pub const MON_3: ::nl_item = 0x2001C;