diff --git a/Install-preparations.md b/Install-preparations.md
index 37e023c..2fd27bd 100644
--- a/Install-preparations.md
+++ b/Install-preparations.md
@@ -26,3 +26,8 @@ Or install `nc`
 yum -q -y install nc
 ```
 
+# 3. alpine
+
+```
+apk --no-cache add -f openssl curl netcat-openbsd
+```