diff --git a/background.html b/background.html
index ea65f8eaf..fba32ebd9 100644
--- a/background.html
+++ b/background.html
@@ -221,7 +221,7 @@ <h3 id="what-is-ethereum-scalability"><a class="header" href="#what-is-ethereum-
 bottlenecks. These bottlenecks limit the supply of transactions, leading to extremely high fees. Scaling ethereum and
 reducing fees can be achieved by better utilizing bandwidth, computation and storage.</p>
 <h3 id="what-is-an-optimistic-rollup"><a class="header" href="#what-is-an-optimistic-rollup">What is an Optimistic Rollup?</a></h3>
-<p><a href="https://vitalik.ca/general/2021/01/05/rollup.html">Optimistic rollup</a> is a layer 2 scalability technique which
+<p><a href="https://vitalik.eth.limo/general/2021/01/05/rollup.html">Optimistic rollup</a> is a layer 2 scalability technique which
 increases the computation &amp; storage capacity of Ethereum without sacrificing security or decentralization. Transaction
 data is submitted on-chain but executed off-chain. If there is an error in the off-chain execution, a fault proof can
 be submitted on-chain to correct the error and protect user funds. In the same way you don't go to court unless there
diff --git a/print.html b/print.html
index 165e869d6..67e6307af 100644
--- a/print.html
+++ b/print.html
@@ -305,7 +305,7 @@ <h3 id="what-is-ethereum-scalability"><a class="header" href="#what-is-ethereum-
 bottlenecks. These bottlenecks limit the supply of transactions, leading to extremely high fees. Scaling ethereum and
 reducing fees can be achieved by better utilizing bandwidth, computation and storage.</p>
 <h3 id="what-is-an-optimistic-rollup"><a class="header" href="#what-is-an-optimistic-rollup">What is an Optimistic Rollup?</a></h3>
-<p><a href="https://vitalik.ca/general/2021/01/05/rollup.html">Optimistic rollup</a> is a layer 2 scalability technique which
+<p><a href="https://vitalik.eth.limo/general/2021/01/05/rollup.html">Optimistic rollup</a> is a layer 2 scalability technique which
 increases the computation &amp; storage capacity of Ethereum without sacrificing security or decentralization. Transaction
 data is submitted on-chain but executed off-chain. If there is an error in the off-chain execution, a fault proof can
 be submitted on-chain to correct the error and protect user funds. In the same way you don't go to court unless there