diff --git a/zcash_primitives/Cargo.toml b/zcash_primitives/Cargo.toml
index 4a99d0090..160c89ae0 100644
--- a/zcash_primitives/Cargo.toml
+++ b/zcash_primitives/Cargo.toml
@@ -26,9 +26,9 @@ log = "0.4"
 pairing = { version = "0.16", path = "../pairing" }
 rand = "0.7"
 rand_core = "0.5.1"
-ripemd160 = { version = "0.8", optional = true }
+ripemd160 = { version = "0.9", optional = true }
 secp256k1 = { version = "=0.15.0", optional = true }
-sha2 = "0.8"
+sha2 = "0.9"
 subtle = "2.2.1"
 
 [dev-dependencies]