Use OpenSSL 1.0.0a on Windows.
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 8742b46..eec7d4c 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -139,7 +139,7 @@
 
     Get the source code through
 
-    svn export http://svn.python.org/projects/external/openssl-0.9.8l
+    svn export http://svn.python.org/projects/external/openssl-1.0.0a
 
     ** NOTE: if you use the Tools\buildbot\external(-amd64).bat approach for
     obtaining external sources then you don't need to manually get the source