diff --git a/ShellB3/shallbethree.sh b/ShellB3/shallbethree.sh
index baf36de35774cb557851b617348657da107519b0..31233df1dbc8f20ea2710f0c767c82cf42a2f40c 100755
--- a/ShellB3/shallbethree.sh
+++ b/ShellB3/shallbethree.sh
@@ -571,7 +571,7 @@ export MOCKVER=2.0.0
 export MATPLOTLIBVER=1.5.1
 export GEOSVER=3.5.0
 export BASEMAPVER=1.0.7
-export CDF4VER=4.2.1.1
+export CDF4VER=4.4.0
 export CDF4CXXVER=4.2.1
 export CDF4FORVER=4.4.3
 export PYCDFVER=0.6-3b