diff --git a/README.md b/README.md
index f552826..3990cfe 100644
--- a/README.md
+++ b/README.md
@@ -145,6 +145,7 @@ Baked-in Validations
 | btc_addr | Bitcoin Address |
 | btc_addr_bech32 | Bitcoin Bech32 Address (segwit) |
 | datetime | Datetime |
+| e164 | e164 formatted phone number |
 | email | E-mail String
 | eth_addr | Ethereum Address |
 | hexadecimal | Hexadecimal String |
@@ -185,7 +186,6 @@ Baked-in Validations
 | Tag | Description |
 | - | - |
 | dir | Directory |
-| e164 | NOT DOCUMENTED IN doc.go |
 | endswith | Ends With |
 | excludes | Excludes |
 | excludesall | Excludes All |
diff --git a/doc.go b/doc.go
index 4aba75f..96c5e0b 100644
--- a/doc.go
+++ b/doc.go
@@ -684,6 +684,13 @@ This validates that a string value contains a valid hsla color
 
 	Usage: hsla
 
+E.164 Phone Number String
+
+This validates that a string value contains a valid E.164 Phone number
+for example +1123456789
+
+	Usage: e164
+
 E-mail String
 
 This validates that a string value contains a valid email