diff --git a/install_unix b/install_unix
index eb2a16c..90e94b8 100755
--- a/install_unix
+++ b/install_unix
@@ -4,6 +4,13 @@ if escript_path=$(command -v escript)
   then
     echo "Using escript found at $escript_path"
     escript install.escript
+    if zx_link=$(command -v zx)
+      then
+        echo "zx found in \$PATH at $zx_link. Checking for upgrade."
+        zx upgrade
+      else
+        echo "zx is not yet in \$PATH. Once you have added zx's location to \$PATH run \`zx upgrade\`."
+    fi
   else
     echo "Could not locate an Erlang installation."
 fi