diff --git a/Cargo.toml b/Cargo.toml
index b5da599..5c9bd9d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
 	"common/rust",
 	"2021/day1/rust",