diff --git a/myppy/envs/macosx.py b/myppy/envs/macosx.py
index 7458f69..4aa8aa8 100644
--- a/myppy/envs/macosx.py
+++ b/myppy/envs/macosx.py
@@ -179,7 +179,7 @@ def _check_lib_uses_correct_sdk(self,fpath):
                 # This is ridiculous, I should just parse out the version
                 # number and do a less-than check...
                 ok_versions = ("159.1.0", "88.3.10", "88.3.11", "111.1.7",
-                               "111.0.0")
+                               "111.0.0", "159.0.0")
                 for ok_version in ok_versions:
                     if "current version " + ok_version in link:
                         break
diff --git a/myppy/recipes/base.py b/myppy/recipes/base.py
index 3ee81e7..1d1d7c3 100644
--- a/myppy/recipes/base.py
+++ b/myppy/recipes/base.py
@@ -265,7 +265,7 @@ class cmake(Recipe):
 
 class python27(Recipe):
     DEPENDENCIES = ["lib_zlib","lib_readline","lib_sqlite3","lib_bz2"]
-    SOURCE_URL = "http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz"
+    SOURCE_URL = "http://www.python.org/ftp/python/2.7.6/Python-2.7.6.tgz"
     CONFIGURE_ARGS = ("--enable-shared", "--disable-static")
     def _patch(self):
         #  Add some builtin modules:
@@ -412,8 +412,8 @@ class lib_readline(Recipe):
 
 
 class lib_zlib(Recipe):
-    SOURCE_URL = "http://zlib.net/zlib-1.2.7.tar.gz"
-    SOURCE_MD5 = "60df6a37c56e7c1366cca812414f7b85"
+    SOURCE_URL = "http://zlib.net/zlib-1.2.8.tar.gz"
+    SOURCE_MD5 = "44d667c142d7cda120332623eab69f40"
     CONFIGURE_ARGS = ("--static",)
     CONFIGURE_VARS = None
     def _configure(self):
@@ -514,7 +514,7 @@ def install(self):
 
 
 class lib_wxwidgets_base(Recipe):
-    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/2.8.11.0/wxPython-src-2.8.11.0.tar.bz2"
+    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/3.0.0.0/wxPython-src-3.0.0.0.tar.bz2"
     CONFIGURE_ARGS = ("--with-opengl","--enable-unicode","--enable-optimize","--enable-debug_flag",)
     def _unpack(self):
         try:
@@ -528,13 +528,13 @@ def _unpack(self):
 
 class lib_wxwidgets_gizmos(lib_wxwidgets_base):
     DEPENDENCIES = ["lib_wxwidgets_base"]
-    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/2.8.11.0/wxPython-src-2.8.11.0.tar.bz2"
+    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/3.0.0.0/wxPython-src-3.0.0.0.tar.bz2"
     MAKE_RELPATH = "contrib/src/gizmos"
 
 
 class lib_wxwidgets_stc(lib_wxwidgets_base):
     DEPENDENCIES = ["lib_wxwidgets_base"]
-    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/2.8.11.0/wxPython-src-2.8.11.0.tar.bz2"
+    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/3.0.0.0/wxPython-src-3.0.0.0.tar.bz2"
     MAKE_RELPATH = "contrib/src/stc"
     
 
@@ -626,7 +626,7 @@ def CONFIGURE_ARGS(self):
 
 class py_wxpython(PyRecipe):
     DEPENDENCIES = ["lib_wxwidgets"]
-    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/2.8.11.0/wxPython-src-2.8.11.0.tar.bz2"
+    SOURCE_URL = "http://downloads.sourceforge.net/project/wxpython/wxPython/3.0.0.0/wxPython-src-3.0.0.0.tar.bz2"
     def install(self):
         self._generic_pyinstall(relpath="wxPython")