diff --git a/browser/background.js b/browser/background.js
deleted file mode 100644
index dbe664c2..00000000
--- a/browser/background.js
+++ /dev/null
@@ -1,24 +0,0 @@
-if (typeof browser === "undefined") {
-    var browser = chrome;
-}
-
-browser.webRequest.onHeadersReceived.addListener(({ responseHeaders, url }) => {
-    const cspIdx = responseHeaders.findIndex(h => h.name === "content-security-policy");
-    if (cspIdx !== -1)
-        responseHeaders.splice(cspIdx, 1);
-
-    if (url.endsWith(".css")) {
-        const contentType = responseHeaders.find(h => h.name === "content-type");
-        if (contentType)
-            contentType.value = "text/css";
-        else
-            responseHeaders.push({
-                name: "content-type",
-                value: "text/css"
-            });
-    }
-
-    return {
-        responseHeaders
-    };
-}, { urls: ["*://*.discord.com/*"] }, ["blocking", "responseHeaders"]);
diff --git a/browser/manifest.json b/browser/manifest.json
index 2988ba9d..ea79d129 100644
--- a/browser/manifest.json
+++ b/browser/manifest.json
@@ -1,32 +1,40 @@
 {
-    "manifest_version": 2,
+    "manifest_version": 3,
     "name": "Vencord Web",
     "description": "Yeee",
     "version": "1.0.0",
     "author": "Vendicated",
     "homepage_url": "https://github.com/Vendicated/Vencord",
-    "background": {
-        "scripts": [
-            "background.js"
-        ]
-    },
+
+    "host_permissions": [
+        "*://*.discord.com/*",
+        "https://raw.githubusercontent.com/*"
+    ],
+
+    "permissions": ["declarativeNetRequest"],
+
     "content_scripts": [
         {
             "run_at": "document_start",
-            "matches": [
-                "*://*.discord.com/*"
-            ],
-            "js": [
-                "content.js"
-            ]
+            "matches": ["*://*.discord.com/*"],
+            "js": ["content.js"]
         }
     ],
-    "permissions": [
-        "*://*.discord.com/*",
-        "webRequest",
-        "webRequestBlocking"
-    ],
+
     "web_accessible_resources": [
-        "dist/Vencord.js"
-    ]
+        {
+            "resources": ["dist/Vencord.js"],
+            "matches": ["*://*.discord.com/*"]
+        }
+    ],
+
+    "declarative_net_request": {
+        "rule_resources": [
+            {
+                "id": "modifyResponseHeaders",
+                "enabled": true,
+                "path": "modifyResponseHeaders.json"
+            }
+        ]
+    }
 }
diff --git a/browser/modifyResponseHeaders.json b/browser/modifyResponseHeaders.json
new file mode 100644
index 00000000..ed390759
--- /dev/null
+++ b/browser/modifyResponseHeaders.json
@@ -0,0 +1,38 @@
+[
+    {
+        "id": 1,
+        "action": {
+            "type": "modifyHeaders",
+            "responseHeaders": [
+                {
+                    "header": "content-security-policy",
+                    "operation": "remove"
+                },
+                {
+                    "header": "content-security-policy-report-only",
+                    "operation": "remove"
+                }
+            ]
+        },
+        "condition": {
+            "resourceTypes": ["main_frame"]
+        }
+    },
+    {
+        "id": 2,
+        "action": {
+            "type": "modifyHeaders",
+            "responseHeaders": [
+                {
+                    "header": "content-type",
+                    "operation": "set",
+                    "value": "text/css"
+                }
+            ]
+        },
+        "condition": {
+            "resourceTypes": ["stylesheet"],
+            "urlFilter": "https://raw.githubusercontent.com/*"
+        }
+    }
+]
diff --git a/scripts/build/buildWeb.mjs b/scripts/build/buildWeb.mjs
index 1efdd8f5..f5be6510 100755
--- a/scripts/build/buildWeb.mjs
+++ b/scripts/build/buildWeb.mjs
@@ -76,7 +76,7 @@ zip({
     dist: {
         "Vencord.js": readFileSync("dist/browser.js")
     },
-    ...Object.fromEntries(await Promise.all(["background.js", "content.js", "manifest.json"].map(async f => [
+    ...Object.fromEntries(await Promise.all(["modifyResponseHeaders.json", "content.js", "manifest.json"].map(async f => [
         f,
         await readFile(join("browser", f))
     ]))),