diff --git a/src/gleam/crypto.gleam b/src/gleam/crypto.gleam
index 99be23c..974a4df 100644
--- a/src/gleam/crypto.gleam
+++ b/src/gleam/crypto.gleam
@@ -37,6 +37,7 @@ pub type HashAlgorithm {
 pub type Hasher
 
 /// Computes a digest of the input bit string.
+/// Uses `hash_init`, `hash_update` and `digest` for calculation.
 ///
 /// Example:
 /// ```gleam