diff --git a/README.md b/README.md
index f3deb3e..012eca2 100644
--- a/README.md
+++ b/README.md
@@ -6,10 +6,10 @@ This is the code that runs the hackthiscontract.io website.
 
 ## Running it
 
-1. `geth --rinkeby (starts ethereum node on the rinkeby test network)`
+1. `geth --holesky (starts ethereum node on the Holesky test network)`
 2. `source hackthiscontractenv/bin/activate (starts virtualenv)`
 3. In dev: `python3 run.py` - In prod: `waitress-serve run:app`
-4. `geth --rinkeby --rpc --rpccorsdomain "https://remix.ethereum.org"` (start JS console and enable remix debugging)
+4. `geth --holesky --rpc --rpccorsdomain "https://remix.ethereum.org"` (start JS console and enable remix debugging)
 
 ## Dependencies
 * python3 + pip
diff --git a/templates/dashboard.html b/templates/dashboard.html
index 1fba5cd..ffe2175 100644
--- a/templates/dashboard.html
+++ b/templates/dashboard.html
@@ -6,7 +6,7 @@
         <div class="container ryl-padding-top-20">
             <p class="ryl-margin-bottom-30">
                 <span style="font-size: 32px;"><b>{% if exists %}Welcome back{%else%}Welcome{%endif%}, <a
-                        href="https://rinkeby.etherscan.io/address/{{address}}"
+                        href="https://holesky.etherscan.io/address/{{address}}"
                         class="underline">{{address}}!</a></b></span>
                 <button class="copy btn" title="Copy" data-clipboard-text="{{address}}"><i class="icon-clipboard"></i>
                 </button>
@@ -14,8 +14,8 @@
                     <tiny><br>[Logout]</tiny>
                 </a></p>
             <p class="ryl-margin-bottom-30">
-            <p><b>To get started, select a challenge below</b><br> (you may require Rinkeby Ether to complete some
-            challenges, which can be obtained from <a href="https://www.rinkeby.io" class="underline">the faucet</a>)</p><br>
+            <p><b>To get started, select a challenge below</b><br> (you may require Holesky Ether to complete some
+            challenges, which can be obtained from <a href="https://holesky-faucet.pk910.de/" class="underline">the faucet</a>)</p><br>
             <p>Check out the <a href="/ranking">leaderboard</a> to see where you match up against your peers.</p><br><br><br>
             {% for challenge in challenge_ids %}
             <div style="width: auto; display: block;">
@@ -64,7 +64,7 @@
                 </p>
                 {% if challenges[challenge]['deployed'] %}
                 <p> Deployed at address <b><a
-                        href="https://rinkeby.etherscan.io/address/{{challenges[challenge]['status'][2]}}" class="underline">{{
+                        href="https://holesky.etherscan.io/address/{{challenges[challenge]['status'][2]}}" class="underline">{{
                     challenges[challenge]['status'][2] }}</a></b>
                     <button class="copy btn" title="Copy" data-clipboard-text="{{
                 challenges[challenge]['status'][2] }}"><i class="icon-clipboard"></i></button>
diff --git a/templates/index.html b/templates/index.html
index 030adae..a41b6bb 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -5,8 +5,8 @@
     <div class="ryl-cell-middle text-center">
         <div style="background-color:rgba(0, 0, 0, 0.7); padding: 30px 30px 8px 30px;"><b class="ryl-fs-1">TEST YOUR
             H4CKING SKILLZZ</b>
-            <p class="ryl-fs-4 ryl-fw-medium">Enter your <a href="https://www.rinkeby.io/"
-                                                            style="text-decoration:underline;">Rinkeby address</a> to
+            <p class="ryl-fs-4 ryl-fw-medium">Enter your <a href="https://github.com/eth-clients/holesky"
+                                                            style="text-decoration:underline;">Holesky address</a> to
                 get started:
             <form id="form" onsubmit="onSubmit()" method="get"><input type="text" id="address" size=60
                                                                       style="margin-top:-20px;"/>
@@ -29,16 +29,16 @@
             <p class="ryl-margin-bottom-30">
             <p><b>Hack This Contract</b> is an experimental new site to allow Solidity developers, auditors, and
                 designers to better understand how to write secure contracts (and exploit insecure contracts).
-                We provide a series of example, vulnerable contracts on the Rinkeby testnet, and encourage developers to
+                We provide a series of example, vulnerable contracts on the Holesky testnet, and encourage developers to
                 exploit their vulnerabilities with their own contracts or techniques. We also provide a <a
                         class="underline" href="/ranking">leaderboard</a> for
                 developers to rank themselves across the broader security community.</p>
-            <p>Developers should familiarize themselves with Rinkeby <a href="https://www.rinkeby.io/"
+            <p>Developers should familiarize themselves with Holesky <a href="https://github.com/eth-clients/holesky"
                                                                         style="text-decoration:underline;">through the
                 tutorial provided on their official website.</a></p>
             <p><b>We are always soliciting more examples of contracts to add to our challenge database, and encourage
                 contributions to the back-end as well on <a href="https://github.com/pdaian/hackthiscontract"
-                                                            class="underline">Github</a></b>.
+                                                            class="underline">GitHub</a></b>.
                 <br><br>
             <p><i>Hack This Contract was developed with <span style="color:red;"> &hearts;&hearts;&hearts;</span> at <a
                     class="underline"
diff --git a/templates/ranking.html b/templates/ranking.html
index 218a813..459c819 100644
--- a/templates/ranking.html
+++ b/templates/ranking.html
@@ -52,7 +52,7 @@
         <tbody>
         {% for user in users %}
         <tr>
-            <td style="font-family: monospace"><a href="http://rinkeby.etherscan.io/address/{{ user[0] }}">{{
+            <td style="font-family: monospace"><a href="http://holesky.etherscan.io/address/{{ user[0] }}">{{
                 user[0] }}</a></td>
             <td>{{ user[1] }}</td>
         </tr>
diff --git a/templates/view.html b/templates/view.html
index e9ff175..469b6c3 100644
--- a/templates/view.html
+++ b/templates/view.html
@@ -7,7 +7,7 @@
             <div class="container ryl-padding-top-20">
                 <h4 class="ryl-margin-bottom-30">Your contract is <span style="color:green;">deployed</span> at address
                     <a
-                            class="underline" href="http://rinkeby.etherscan.io/address/{{status[2]}}">{{ status[2]
+                            class="underline" href="http://holesky.etherscan.io/address/{{status[2]}}">{{ status[2]
                         }}</a>!
                     <button class="copy btn" title="Copy" data-clipboard-text="{{status[2]}}"><i
                             class="icon-clipboard"></i>