diff --git a/OneHundredYearCryptography.md b/OneHundredYearCryptography.md
index ca13f88..7a2375a 100644
--- a/OneHundredYearCryptography.md
+++ b/OneHundredYearCryptography.md
@@ -1,6 +1,6 @@
 See also [NewCapDesign](NewCapDesign) and [Bibliography](Bibliography).
 
-This describes a project to enhance Tahoe-LAFS's cryptographic system so that Tahoe shipped today/next year might remain safe from cryptographic attacks for a 100 years. The initial ideas were presented on a [post by Zooko on his klog](http://tahoe-lafs.org/~zooko/wiki.html#%5B%5Bcan%20we%20build%20a%20crypto%20system%20to%20last%20for%20a%20hundred%20years%3F%5D%5D).
+This describes a project to enhance Tahoe-LAFS's cryptographic system so that Tahoe shipped today/next year might remain safe from cryptographic attacks for a 100 years. The initial ideas were presented on a [post by Zooko on his klog](https://lafsgateway.zooko.com/uri/URI%3ADIR2-RO%3Ad73ap7mtjvv7y6qsmmwqwai4ii%3Atq5tqejzulg7yj4h7nxuurpiuuz5jsgvczmdamcalpk2rc6gmbsq/klog.html)#[[can%20we%20build%20a%20crypto%20system%20to%20last%20for%20a%20hundred%20years%3F%5D%5D.
 
 One idea is to combine two primitives, both thought to be safe, such that even if one of them fails catastrophically Tahoe-LAFS remains secure.