diff --git a/zingolib/Cargo.toml b/zingolib/Cargo.toml
index f3292c2e1..50f2f179a 100644
--- a/zingolib/Cargo.toml
+++ b/zingolib/Cargo.toml
@@ -14,6 +14,9 @@ test-elevation = ["portpicker", "testvectors", "tempfile", "tempdir"]
 testvectors = []
 tempfile = ["dep:tempfile"]
 sync = [ "dep:zingo-sync" ]
+default = ["zingo-sync"]
+zingo-sync = ['dep:zingo-sync']
+
 
 [dependencies]
 zingo-memo = { path = "../zingo-memo" }