diff --git a/Cargo.toml b/Cargo.toml
index 01b2b1c..12d493f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,6 @@
 [workspace]
 members = ["pubsubman", "pubsubman_backend"]
+resolver = "2"
 
 [workspace.dependencies]
 chrono = { version = "0.4.26", features = ["clock", "serde"] }