diff --git a/common-tasks/copying-files.md b/common-tasks/copying-files.md
index acf2de54..392310a6 100644
--- a/common-tasks/copying-files.md
+++ b/common-tasks/copying-files.md
@@ -41,6 +41,6 @@ The scheme is *secure* because it doesn't allow other qubes to steal the files t
 
 However, one should keep in mind that performing a data transfer from *less trusted* to *more trusted* qubes can always be potentially insecure, because the data that we insert might potentially try to exploit some hypothetical bug in the destination qube (e.g. a seemingly innocent JPEG that we copy from an untrusted qube might contain a specially crafted exploit for a bug in JPEG parsing application in the destination qube). This is a general problem and applies to any data transfer between *less trusted to more trusted* qubes. It even applies to the scenario of copying files between air-gapped machines. So, you should always copy data only from *more trusted* to *less trusted* qubes.
 
-See also [this article](http://theinvisiblethings.blogspot.com/2011/03/partitioning-my-digital-life-into.html) for more information on this topic, and some ideas of how we might solve this problem in some future version of Qubes.
+See also [this article](https://blog.invisiblethings.org/2011/03/13/partitioning-my-digital-life-into.html) for more information on this topic, and some ideas of how we might solve this problem in some future version of Qubes.
 
 You may also want to read how to [revoke "Yes to All" authorization](/doc/qrexec3/#revoking-yes-to-all-authorization)