diff --git a/Cargo.toml b/Cargo.toml
index 2ed848b..f27a8b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -112,7 +112,7 @@ cryptoxide = { version = ">=0.6.3, <0.7", default-features = false, features = [
 # consumer does. Narrow this to `<0.4.4` if that risk should instead be borne
 # by the requirement, at the cost of needing a hiss release before consumers
 # can pick up any eccoxide 0.4.x fix.
-eccoxide = { version = ">=0.4.3, <0.5", default-features = false, features = ["p256r1", "table", "x25519", "x448"] }
+eccoxide = { version = ">=0.4.3, <0.6", default-features = false, features = ["p256r1", "table", "x25519", "x448"] }
 hex = "0.4"
 # The `noise!` pattern-DSL macro — the built-in patterns are defined with
 # it, so it is a required (build-time-only) dependency.