diff --git a/ucan-key-support/Cargo.toml b/ucan-key-support/Cargo.toml
index e8cbe332..d667920c 100644
--- a/ucan-key-support/Cargo.toml
+++ b/ucan-key-support/Cargo.toml
@@ -23,7 +23,7 @@ default = []
 anyhow = "1.0"
 async-trait = "0.1"
 bs58 = "0.5"
-ed25519-zebra = "3.1"
+ed25519-zebra = "4"
 log = "0.4"
 rsa = "0.9"
 p256 = "0.13"