diff --git a/plonky2x/core/Cargo.toml b/plonky2x/core/Cargo.toml
index 14b0890e..b1820df5 100644
--- a/plonky2x/core/Cargo.toml
+++ b/plonky2x/core/Cargo.toml
@@ -19,7 +19,7 @@ plonky2x-derive = { path = "../derive" }
 
 num = { version = "0.4", default-features = false }
 sha2 = "0.10.7"
-curve25519-dalek = "=4.0.0"
+curve25519-dalek = "4"
 ff = { package = "ff", version = "0.13", features = ["derive"] }
 ethers = { version = "2.0" }
 hex = "0.4.3"