diff --git a/linux/Environment-Setup.md b/linux/Environment-Setup.md
index 90474ab..2183999 100644
--- a/linux/Environment-Setup.md
+++ b/linux/Environment-Setup.md
@@ -71,6 +71,8 @@ sudo apt update
 sudo apt install caddy
 ```
 
+For trust/untrust certs install using `sudo apt install libss3-tools`
+
 ### Running Caddyfiles Directly
 
 Disable the systemctl service: `sudo systemctl disable caddy`