diff --git a/ArchInstallation.md b/ArchInstallation.md
index 47b64f4..d82bd4c 100644
--- a/ArchInstallation.md
+++ b/ArchInstallation.md
@@ -6,7 +6,7 @@
 
 Mapnik is available as a community package. To install it, just run:
 
-    # pacman -Sy mapnik
+    # pacman -Syu mapnik
 
 ## Mapnik 2 from Git