diff --git a/mod.zig b/mod.zig
index 21ba365cb2731c4c961c4141af41db6d26b8f0e4..730bc8a7db17b77052bf7ba00af03aaea2d16d9d 100644
--- a/mod.zig
+++ b/mod.zig
@@ -61,6 +61,7 @@ pub const errno = struct {
         ENOANO,
         EBADRQC,
         EBADSLT,
+        EDEADLOCK,
         EBFONT,
         ENOSTR,
         ENODATA,