diff --git a/.gitignore b/.gitignore
index 459d696..fe21c97 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@ dist/
 build/
 /xflux
 /installed.txt
+/xflux11
+/xflux12
diff --git a/download-xflux.py b/download-xflux.py
old mode 100644
new mode 100755
index acc5674..5796b76
--- a/download-xflux.py
+++ b/download-xflux.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 from sys import maxsize
 import subprocess
 
@@ -5,15 +7,20 @@
 # you probably want to change that too.
 def download_xflux():
     # Determines which is the appropriate executable for 32-bit
-    if maxsize == 2147483647:
+    if maxsize == 2**31 - 1:
         print("Downloading 32-bit xflux ...")
-        url = "https://justgetflux.com/linux/xflux-pre.tgz"
-    elif maxsize == 9223372036854775807:
+        urls = ["https://justgetflux.com/linux/xflux-pre.tgz"]
+    elif maxsize == 2**63 - 1:
         print("Downloading 64-bit xflux ...")
-        url = "https://justgetflux.com/linux/xflux64.tgz"
-    tarchive = "/tmp/xflux.tgz"
-    subprocess.call(['wget', url, '-O', tarchive])
-    subprocess.call(['tar', '-xvf', tarchive])
+        urls = ["https://justgetflux.com/linux/xflux64.tgz",
+                "https://justgetflux.com/linux/xflux11.tgz",
+                "https://justgetflux.com/linux/xflux12.tgz"]
+    else:
+        raise Exception("Unexpected maxsize = %i!" % maxsize)
+    for url in urls:
+        tarchive = "/tmp/xflux.tgz"
+        subprocess.call(['wget', url, '-O', tarchive])
+        subprocess.call(['tar', '-xvf', tarchive])
 
 if __name__ == '__main__':
     download_xflux()