diff --git a/Formula/cfitsio.rb b/Formula/cfitsio.rb
index aa915677f8..428b04dbf6 100644
--- a/Formula/cfitsio.rb
+++ b/Formula/cfitsio.rb
@@ -8,9 +8,9 @@ end
 
 class Cfitsio < Formula
   homepage 'http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html'
-  url 'ftp://heasarc.gsfc.nasa.gov/software/fitsio/c/cfitsio3310.tar.gz'
-  sha1 '35360dccc69dc5f12efb6fc9096ad951b59244d5'
-  version '3.310'
+  url 'ftp://heasarc.gsfc.nasa.gov/software/fitsio/c/cfitsio3340.tar.gz'
+  sha1 '9b6f61bbc0528662134d05f9d84dfe88db9df9b2'
+  version '3.340'
 
   option 'with-examples', "Compile and install example programs"