diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index f5868f71e9af718e2464e03a9e241f95f104ae89..501ba44557b4a817d7de516795bd4ee4d3361c24 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -146,6 +146,7 @@ pub const MAP_TYPE = enum(u4) {
     SHARED = 0x01,
     PRIVATE = 0x02,
     SHARED_VALIDATE = 0x03,
+    DROPPABLE = 0x08,
 };
 
 pub const MAP = switch (native_arch) {