diff --git a/docs/about/attribution.md b/docs/about/attribution.md
index aeb8149..43c1278 100644
--- a/docs/about/attribution.md
+++ b/docs/about/attribution.md
@@ -14,7 +14,7 @@ This site, and all StarCat Systems projects, products, and services make use of
 - [StageLink](https://stagelink.cloud) logo - adapted from [slider](https://thenounproject.com/icon/slider-2309209/) by [DinosoftLabs](https://thenounproject.com/creator/dinosoftlab/) from Noun Project.
 - [PostLine](https://postline.email) logo - adapted from [Group Mail](https://thenounproject.com/icon/group-mail-1571732/) by [Smashicons](https://thenounproject.com/creator/smashicons/) from Noun Project.
 - [OpenHost](https://openho.st) logo - adapted from [Blockchain](https://thenounproject.com/icon/blockchain-7881143/) by [Hermanto](https://thenounproject.com/creator/kak.her1992/) from Noun Project.
-- [PostLine](https://postline.email) website icons - from [Octicons](https://octicons.github.com/).
+- [PostLine](https://postline.email) website icons - from [Octicons](https://octicons.github.com/) and [Material Design](https://pictogrammers.com/library/mdi/).
 
 
 ## Images