diff --git a/spack/packages/dawn/package.py b/spack/packages/dawn/package.py
index 703a134b3cfdfc360b91904ac6c328858083a88c..52da825cc628d06a437a6c88b961dd29a4e5c2ed 100644
--- a/spack/packages/dawn/package.py
+++ b/spack/packages/dawn/package.py
@@ -32,8 +32,7 @@ class Dawn(MakefilePackage):
 
     # Note: Dawn homepage not available anymore...
     homepage = "https://geant4.kek.jp/~tanaka"
-    #url      = "http://geant4.kek.jp/~tanaka/src/dawn_3_91a.tgz"
-    url      = "http://10.10.241.24/software/dawn_3_91a.tgz"
+    url      = "http://geant4.kek.jp/~tanaka/src/dawn_3_91a.tgz"
 
     maintainers = ['sly2j']
 
diff --git a/spack/packages/dawncut/package.py b/spack/packages/dawncut/package.py
index 56727106ca8485278e180de3d8429335343a9540..ffe9adfa32f4f133391e3610f073dfa0d3173007 100644
--- a/spack/packages/dawncut/package.py
+++ b/spack/packages/dawncut/package.py
@@ -15,17 +15,36 @@ class Dawncut(MakefilePackage):
 
     # dawn webpage not available anymore
     homepage = "https://geant4.kek.jp/~tanaka"
-    url = "http://10.10.241.24/software/dawncut_1_54a.tar.gz"
+    url = "http://geant4.kek.jp/~tanaka/src/dawncut_1_54a.taz"
     maintainers = ['sly2j']
 
     version('1_54a',
-            sha256='17d7ccd2ff863e2f3700cc3e751cfca37a1425abfa0edc3b8f6497d8746ddcf4')
+            url='http://geant4.kek.jp/~tanaka/src/dawncut_1_54a.taz',
+            sha256='531e1f0e2ed35de3e2b1803108c0efb732d83a0c676f14083bd41a71346b4fa9',
+            expand=False)
 
-    # FIXME: Add dependencies if required.
-    # depends_on('foo')
+    phases = ['unpack', 'repatch', 'edit', 'build', 'install']
 
-    ## Patch to add install directive to Makefile
-    patch('install.patch')
+    def unpack(self, spec, prefix):
+        # Untar inner tar files
+        def members(tf, tld):
+            l = len(tld)
+            for member in tf.getmembers():
+                if member.path.startswith(tld):
+                    member.path = member.path[l:]
+                    yield member
+
+        with working_dir(self.stage.source_path):
+            import tarfile
+            install_tar = tarfile.open('dawncut_1_54a.taz')
+            install_tar.extractall(members=members(install_tar, 'dawncut_1_54a/'))
+
+    def repatch(self, spec, prefix):
+        # Patch to add install directive to Makefile
+        src = self.stage.source_path
+        patches = self.package_dir
+        which('patch')('-N', '-l', '-p1',
+                       '-i', join_path(patches, 'install.patch'))
 
     def edit(self, spec, prefix):
         makefile = FileFilter("Makefile")