diff --git a/README.md b/README.md
index 7803422..36a3649 100644
--- a/README.md
+++ b/README.md
@@ -63,21 +63,25 @@ It is highly recommended that you install the following mods, too:
 * [autobahn](https://github.com/joe7575/autobahn): Street blocks and slopes with stripes for faster traveling
 * [[ta4_jetpack](https://github.com/joe7575/ta4_jetpack): A Jetpack with hydrogen as fuel and TA4 recipe
 
-For large servers with many player `lsqlite3` is recommended.
-The package has to be installed via [luarocks](https://luarocks.org/):
+For large servers with many players, the following packages are recommended:
 
-    luarocks  --lua-version 5.1 install lsqlite3
+* lua-mashal for faster serialization/deserialization of data
+* lsqlite3 for storing node and network data
 
-To enable this `unsafe` package, add 'techage' to the list of trusted mods in `minetest.conf`:
+The packages have to be installed via [luarocks](https://luarocks.org/):
 
-    secure.trusted_mods = techage
+    luarocks --lua-version 5.1 install lsqlite3
+    luarocks --lua-version 5.1 install lua-marshal
+
+To enable these `unsafe` packages, add 'techage' and 'lua-marshal'
+to the list of trusted mods in `minetest.conf`:
+
+    secure.trusted_mods = techage,lua-marshal
 
 and add the following line to your `world.mt` or `minetest.conf`:
 
     techage_use_sqlite = true
 
-For the installation of 'luarocks' (if not already available), see [luarocks](https://luarocks.org/)
-
 Available worlds will be converted to 'lsqlite3', but there is no way back, so:
 
 **Never disable 'lsqlite3' for a world that has already been used!**