diff --git a/README.md b/README.md
index 35a62be..5f8fad8 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 * MD5
 * SHA1
 * SHA265
+* HMAC
 * Converting a list of bytes into a hex string
 * Converting a list of bytes into a base64-encoded string.
 * Converting a Base 64 encoded String into list of bytes.