diff --git a/attribution-reporting/.firebaserc b/attribution-reporting/.firebaserc
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/attribution-reporting/.firebaserc
@@ -0,0 +1 @@
+{}
diff --git a/attribution-reporting/README.md b/attribution-reporting/README.md
index 763d865..f17fc0f 100644
--- a/attribution-reporting/README.md
+++ b/attribution-reporting/README.md
@@ -6,7 +6,7 @@
 
 ### Set up (one time only)
 1. If it's not yet installed on your machine, install [node.js](https://nodejs.org/en/download/). 
-2. Install the latest Firebase CLI by running the following in your terminal: `npm install -g firebase-tools`.
+2. Install the latest Firebase CLI by running the following in your terminal: `npm install -g firebase-tools`. The version known to work with this README.md is 13.3.0.
 3. In your terminal, run `git clone https://github.com/GoogleChromeLabs/trust-safety-demo.git && cd trust-safety-demo/attribution-reporting`. This command will create a folder, clone all of the `trust-safety` demo code in that folder, and navigate you to the `attribution-reporting` demo subfolder.
 4. In your terminal, run `cd functions && npm install && cd ..`. This command will install all the required dependencies for you to locally run the `attribution-reporting` demo.
 
diff --git a/attribution-reporting/firebase.json b/attribution-reporting/firebase.json
index 63417a4..bc92995 100644
--- a/attribution-reporting/firebase.json
+++ b/attribution-reporting/firebase.json
@@ -1,5 +1,6 @@
 {
-  "hosting": [{
+  "hosting": [
+    {
       "site": "arapi-home",
       "public": "sites/home",
       "ignore": [
@@ -7,10 +8,12 @@
         "**/.*",
         "**/node_modules/**"
       ],
-      "rewrites": [{
-        "source": "**",
-        "function": "home"
-      }]
+      "rewrites": [
+        {
+          "source": "**",
+          "function": "home"
+        }
+      ]
     },
     {
       "site": "arapi-adtech",
@@ -20,7 +23,8 @@
         "**/.*",
         "**/node_modules/**"
       ],
-      "rewrites": [{
+      "rewrites": [
+        {
           "source": "**",
           "function": "adtech"
         },
@@ -38,10 +42,12 @@
         "**/.*",
         "**/node_modules/**"
       ],
-      "rewrites": [{
-        "source": "**",
-        "function": "advertiser"
-      }]
+      "rewrites": [
+        {
+          "source": "**",
+          "function": "advertiser"
+        }
+      ]
     },
     {
       "site": "arapi-publisher",
@@ -51,10 +57,12 @@
         "**/.*",
         "**/node_modules/**"
       ],
-      "rewrites": [{
-        "source": "**",
-        "function": "publisher"
-      }]
+      "rewrites": [
+        {
+          "source": "**",
+          "function": "publisher"
+        }
+      ]
     }
   ],
   "emulators": {
@@ -65,5 +73,17 @@
       "host": "localhost",
       "port": "8080"
     }
-  }
-}
\ No newline at end of file
+  },
+  "functions": [
+    {
+      "source": "functions",
+      "codebase": "default",
+      "ignore": [
+        "node_modules",
+        ".git",
+        "firebase-debug.log",
+        "firebase-debug.*.log"
+      ]
+    }
+  ]
+}
diff --git a/attribution-reporting/functions/.gitignore b/attribution-reporting/functions/.gitignore
new file mode 100644
index 0000000..40b878d
--- /dev/null
+++ b/attribution-reporting/functions/.gitignore
@@ -0,0 +1 @@
+node_modules/
\ No newline at end of file
diff --git a/attribution-reporting/functions/apps/adtech.js b/attribution-reporting/functions/apps/adtech.js
index 1b82c27..adc8f84 100644
--- a/attribution-reporting/functions/apps/adtech.js
+++ b/attribution-reporting/functions/apps/adtech.js
@@ -171,12 +171,15 @@ adtech.get(
   res.set('Attribution-Reporting-Register-Source', JSON.stringify(headerConfig))
   log('REGISTERING SOURCE \n', headerConfig)
 
-  if (req.originalUrl === '/register-source-image') {
+  const urlParts = req.originalUrl.split('/')
+  const url = urlParts[urlParts.length - 1]
+
+  if (url === 'register-source-image') {
     // Send back the response
     res.status(200).sendFile('blue-shoes.png', {
       root: path.join(__dirname, '../../sites/adtech')
     })
-  } else if (['/register-source-href', '/register-source-js'].includes(req.originalUrl)) {
+  } else if (['register-source-href', 'register-source-js'].includes(url)) {
     res.redirect(advertiserUrl)
   }
 })
diff --git a/attribution-reporting/functions/package.json b/attribution-reporting/functions/package.json
index cfb02f1..53ec609 100644
--- a/attribution-reporting/functions/package.json
+++ b/attribution-reporting/functions/package.json
@@ -9,7 +9,7 @@
     "logs": "firebase functions:log"
   },
   "engines": {
-    "node": "14"
+    "node": "20"
   },
   "repository": {
     "type": "git"
diff --git a/attribution-reporting/functions/views/home/index.pug b/attribution-reporting/functions/views/home/index.pug
index 4822302..1d29608 100644
--- a/attribution-reporting/functions/views/home/index.pug
+++ b/attribution-reporting/functions/views/home/index.pug
@@ -49,10 +49,10 @@ body
                             li Visit 
                               span.code.select chrome://flags/#privacy-sandbox-enrollment-overrides 
                               | and add 
-                              span.code.select https://arapi-adtech.web.app 
+                              span.code.select #{adtechUrl} 
                               | in the text box
                             li Start Chrome from the command line with 
-                              span.code.select --privacy-sandbox-enrollment-overrides=https://arapi-adtech.web.app
+                              span.code.select --privacy-sandbox-enrollment-overrides=#{adtechUrl}
                             li See the 
                               a(href="https://github.com/privacysandbox/attestation/blob/main/how-to-enroll.md#5-do-i-need-to-enroll-to-test-against-local-development-environments" noreferrer noopener target="_blank") explainer
                               |  to learn more