diff --git a/Cargo.toml b/Cargo.toml
index 40caead..c429c1e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ std = []
 [dependencies]
 arrayref = "0.3.5"
 arrayvec = { version = "0.5.1", default-features = false, features = ["array-sizes-33-128"] }
-constant_time_eq = "0.1.4"
+constant_time_eq = "0.1.5"
 # A performance note for the "rayon" feature: Multi-threading can have
 # significant overhead for small inputs, particularly on x86 where individual
 # cores are very fast. On the other hand, on slower platforms like ARM,
diff --git a/src/lib.rs b/src/lib.rs
index c7300d2..3ea8401 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -180,14 +180,14 @@ impl From<Hash> for [u8; OUT_LEN] {
 /// This implementation is constant-time.
 impl PartialEq for Hash {
     fn eq(&self, other: &Hash) -> bool {
-        constant_time_eq::constant_time_eq(&self.0[..], &other.0[..])
+        constant_time_eq::constant_time_eq_32(&self.0, &other.0)
     }
 }
 
 /// This implementation is constant-time.
 impl PartialEq<[u8; OUT_LEN]> for Hash {
     fn eq(&self, other: &[u8; OUT_LEN]) -> bool {
-        constant_time_eq::constant_time_eq(&self.0[..], other)
+        constant_time_eq::constant_time_eq_32(&self.0, other)
     }
 }