Only in a/python2/httplib2: cacerts.txt
diff -ru a/python2/httplib2/__init__.py b/python2/httplib2/__init__.py
--- a/python2/httplib2/__init__.py	2012-03-02 21:12:34.000000000 +0100
+++ b/python2/httplib2/__init__.py	2012-06-20 13:30:39.524140796 +0200
@@ -180,9 +180,8 @@
 # requesting that URI again.
 DEFAULT_MAX_REDIRECTS = 5
 
-# Default CA certificates file bundled with httplib2.
-CA_CERTS = os.path.join(
-        os.path.dirname(os.path.abspath(__file__ )), "cacerts.txt")
+# Use system-wide CA certificates:
+CA_CERTS = '/etc/ssl/ca-bundle.pem'
 
 # Which headers are hop-by-hop headers by default
 HOP_BY_HOP = ['connection', 'keep-alive', 'proxy-authenticate', 'proxy-authorization', 'te', 'trailers', 'transfer-encoding', 'upgrade']
Only in b/python2/httplib2: .__init__.py.swp
Only in a/python3/httplib2: cacerts.txt
diff -ru a/python3/httplib2/__init__.py b/python3/httplib2/__init__.py
--- a/python3/httplib2/__init__.py	2012-03-02 21:12:34.000000000 +0100
+++ b/python3/httplib2/__init__.py	2012-06-20 13:30:22.156140376 +0200
@@ -119,9 +119,8 @@
 # Which headers are hop-by-hop headers by default
 HOP_BY_HOP = ['connection', 'keep-alive', 'proxy-authenticate', 'proxy-authorization', 'te', 'trailers', 'transfer-encoding', 'upgrade']
 
-# Default CA certificates file bundled with httplib2.
-CA_CERTS = os.path.join(
-        os.path.dirname(os.path.abspath(__file__ )), "cacerts.txt")
+# Use system-wide CA certificates:
+CA_CERTS = '/etc/ssl/ca-bundle.pem'
 
 def _get_end2end_headers(response):
     hopbyhop = list(HOP_BY_HOP)
Only in b/python3/httplib2: .__init__.py.swp
diff -ru a/setup.py b/setup.py
--- a/setup.py	2012-03-02 21:12:34.000000000 +0100
+++ b/setup.py	2012-06-20 13:28:26.560137617 +0200
@@ -63,7 +63,6 @@
         """,
         package_dir=pkgdir,
         packages=['httplib2'],
-        package_data={'httplib2': ['*.txt']},
         classifiers=[
         'Development Status :: 4 - Beta',
         'Environment :: Web Environment',