diff --git a/src/hash/hash.go b/src/hash/hash.go
index 82c81034ff..08a0c6764c 100644
--- a/src/hash/hash.go
+++ b/src/hash/hash.go
@@ -10,8 +10,8 @@ import "io"
 // Hash is the common interface implemented by all hash functions.
 //
 // Hash implementations in the standard library (e.g. [hash/crc32] and
-// [crypto/sha256]) implement the [encoding.BinaryMarshaler] and
-// [encoding.BinaryUnmarshaler] interfaces. Marshaling a hash implementation
+// [crypto/sha256]) implement the [encoding.BinaryMarshaler], [encoding.BinaryAppender]
+// and [encoding.BinaryUnmarshaler] interfaces. Marshaling a hash implementation
 // allows its internal state to be saved and used for additional processing
 // later, without having to re-write the data previously written to the hash.
 // The hash state may contain portions of the input in its original form,