diff --git a/.gitignore b/.gitignore
index b045cbf..016575a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ nco-4.0.2.tar.gz
 /nco-4.0.3.tar.gz
 /nco-4.0.4.tar.gz
 /nco-4.0.5.tar.gz
+/nco-4.0.6.tar.gz
diff --git a/nco.spec b/nco.spec
index 5c807eb..16a132f 100644
--- a/nco.spec
+++ b/nco.spec
@@ -1,6 +1,6 @@
 Name:           nco
-Version:        4.0.5
-Release:        3%{?dist}
+Version:        4.0.6
+Release:        1%{?dist}
 Summary:        Suite of programs for manipulating NetCDF/HDF4 files
 Group:          Applications/Engineering
 License:        GPLv3
@@ -16,7 +16,7 @@ BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  bison, flex, gawk
 BuildRequires:  netcdf-devel
-%if 0%{?rhel} <= 5
+%if 0%{?rhel} && 0%{?rhel} <= 5
 BuildRequires:  libnc-dap-devel
 %endif
 BuildRequires:  udunits2-devel
@@ -133,6 +133,10 @@ fi
 %{_libdir}/libnco*.a
 
 %changelog
+* Sat Feb 5 2011 - Orion Poplawski <orion@cora.nwra.com> - 4.0.6-1
+- Update to 4.0.6
+- Really only use libnc-dap for EL5
+
 * Thu Dec 16 2010 - Orion Poplawski <orion@cora.nwra.com> - 4.0.5-3
 - BR antlr-C++ on Fedora 14+
 
diff --git a/sources b/sources
index 5f52cbf..f2ed6df 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-1f0e70c81b5d9042ce534a52668b5e2d  nco-4.0.5.tar.gz
+bc8e8dd6994d415ccc7593524d007052  nco-4.0.6.tar.gz