diff --git a/.codecov.yml b/.codecov.yml
index 52e4b38d9ce..1782e78ff9b 100644
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -4,13 +4,17 @@ coverage:
   range: 60...90
   status:
     project:
+      default: true
       llnl:
+        threshold: 0.5
         paths:
           - lib/spack/llnl
       commands:
+        threshold: 0.5
         paths:
           - lib/spack/spack/cmd
       core:
+        threshold: 0.5
         paths:
           - "!lib/spack/llnl"
           - "!lib/spack/spack/cmd"
diff --git a/lib/spack/spack/database.py b/lib/spack/spack/database.py
index 01d545de6d1..d3fc03fb40f 100644
--- a/lib/spack/spack/database.py
+++ b/lib/spack/spack/database.py
@@ -340,7 +340,6 @@ def invalid_record(hash_key, error):
         # cached prematurely.
         for hash_key, rec in data.items():
             rec.spec._mark_concrete()
-            rec.spec.package.spec._mark_concrete()
 
         self._data = data
 
diff --git a/var/spack/repos/builtin/packages/nco/package.py b/var/spack/repos/builtin/packages/nco/package.py
index acd96f5e9c8..0f96cf403c1 100644
--- a/var/spack/repos/builtin/packages/nco/package.py
+++ b/var/spack/repos/builtin/packages/nco/package.py
@@ -30,8 +30,9 @@ class Nco(AutotoolsPackage):
     netCDF-accessible formats"""
 
     homepage = "http://nco.sourceforge.net/"
-    url      = "https://github.com/nco/nco/archive/4.6.2.tar.gz"
+    url      = "https://github.com/nco/nco/archive/4.6.4.tar.gz"
 
+    version('4.6.4', '22f4e779d0011a9c0db90fda416c8e45')
     version('4.6.3', '0e1d6616c65ed3a30c54cc776da4f987')
     version('4.6.2', 'b7471acf0cc100343392f4171fb56113')
     version('4.6.1', 'ef43cc989229c2790a9094bd84728fd8')
diff --git a/var/spack/repos/builtin/packages/parallel/package.py b/var/spack/repos/builtin/packages/parallel/package.py
index 4297e8acb01..32c3b3f5cdb 100644
--- a/var/spack/repos/builtin/packages/parallel/package.py
+++ b/var/spack/repos/builtin/packages/parallel/package.py
@@ -32,7 +32,12 @@ class Parallel(AutotoolsPackage):
     """
 
     homepage = "http://www.gnu.org/software/parallel/"
-    url      = "http://ftp.gnu.org/gnu/parallel/parallel-20160422.tar.bz2"
+    url      = "http://ftp.gnu.org/gnu/parallel/parallel-20170122.tar.bz2"
 
+    version('20170122', 'c9f0ec01463dc75dbbf292fd8be5f1eb')
     version('20160422', '24621f684130472694333709bd4454cb')
     version('20160322', '4e81e0d36902ab4c4e969ee6f35e6e57')
+
+    def check(self):
+        # The Makefile has a 'test' target, but it does not work
+        make('check')