diff --git a/Cargo.toml b/Cargo.toml
index 727dc484f..80d4c3d26 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,7 @@ members = [
     "serde_derive_internals",
     "test_suite",
 ]
+resolver = "2"
 
 [patch.crates-io]
 serde = { path = "serde" }