diff --git a/setup.py b/setup.py
index c11f0e16..ae527339 100755
--- a/setup.py
+++ b/setup.py
@@ -130,7 +130,7 @@ appcast.write('''
\t\t\t
Release {0}
\t\t\t
\t\t\t\tRelease {0}
+Release {0:.2f}
@@ -144,4 +144,4 @@ appcast.write('''
\t\t\t\ttype="application/octet-stream"
\t\t\t/>
\t\t
-'''.format(float(SHORTVERSION)/100, SHORTVERSION, PKG, sys.platform=='darwin' and 'osx' or 'windows"\n\t\t\t\tsparkle:installerArguments="/passive', VERSION, os.stat(PKG).st_size))
+'''.format(float(SHORTVERSION)/100, SHORTVERSION, PKG, sys.platform=='darwin' and 'osx' or 'windows"\n\t\t\t\tsparkle:installerArguments="/passive', VERSION, os.stat(PKG).st_size, sys.platform=='darwin' and 2 or 3))