diff --git a/libraries/crypto/Cargo.toml b/libraries/crypto/Cargo.toml
index d18c5ade2fd0fd4be15dd7946a390a8387b04ef5..57c8cb80e808b322d1b429db570e333cc0d50fd1 100644
--- a/libraries/crypto/Cargo.toml
+++ b/libraries/crypto/Cargo.toml
@@ -12,7 +12,7 @@ edition = "2018"
 [dependencies]
 libtock = { path = "../../third_party/libtock-rs" }
 cbor = { path = "../cbor" }
-arrayref = "0.3.5"
+arrayref = "0.3.6"
 subtle = { version = "2.2", default-features = false, features = ["nightly"] }
 byteorder = { version = "1", default-features = false }
 hex = { version = "0.3.2", default-features = false, optional = true }