diff --git a/doc/uncloud-manual-2020-08-01.org b/doc/uncloud-manual-2020-08-01.org
index 8c8d7e5..d48ce5e 100644
--- a/doc/uncloud-manual-2020-08-01.org
+++ b/doc/uncloud-manual-2020-08-01.org
@@ -2,7 +2,7 @@
 ** Pre-requisites by operating system
 *** Alpine
     #+BEGIN_SRC sh
-apk add openldap-dev postgresql-dev libxml2-dev libxslt-dev
+apk add openldap-dev postgresql-dev libxml2-dev libxslt-dev gcc python3-dev musl-dev
 #+END_SRC
 *** Debian/Devuan:
     #+BEGIN_SRC sh