diff --git a/zcash_primitives/Cargo.toml b/zcash_primitives/Cargo.toml
index 69da0155c..e62ec0cbc 100644
--- a/zcash_primitives/Cargo.toml
+++ b/zcash_primitives/Cargo.toml
@@ -17,7 +17,7 @@ all-features = true
 
 [dependencies]
 aes = "0.6"
-bitvec = "0.18"
+bitvec = "0.20"
 blake2b_simd = "0.5"
 blake2s_simd = "0.5"
 bls12_381 = "0.4"