diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 81877a1..8e953e5 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -84,23 +84,3 @@ jobs:
           client-id: ${{ secrets.EDGE_CLIENT_ID }}
           client-secret: ${{ secrets.EDGE_CLIENT_SECRET }}
           access-token-url: ${{ secrets.EDGE_ACCESS_TOKEN_URL }}
-
-      - name: Replace manifest
-        run: pnpm build:replaceForFirefox ${{ vars.FF_ID }}
-
-      - name: Build extension
-        run: pnpm build
-
-      - name: Zip the build
-        run: |
-          cd build
-          zip -r ../buildFF.zip .
-          cd ..
-
-      - name: Firefox upload & release
-        uses: cardinalby/webext-buildtools-firefox-addons-action@1.0.9
-        with:
-          zipFilePath: buildFF.zip
-          extensionId: ${{ vars.FF_ID }}
-          jwtIssuer: ${{ secrets.FF_JWT_ISSUER }}
-          jwtSecret: ${{ secrets.FF_JWT_SECRET }}
diff --git a/build-scripts/replaceForFirefox.cjs b/build-scripts/replaceForFirefox.cjs
deleted file mode 100644
index 981456d..0000000
--- a/build-scripts/replaceForFirefox.cjs
+++ /dev/null
@@ -1,45 +0,0 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
-// replaceForFirefox.cjs
-const fs = require('fs');
-const path = require('path');
-
-const manifestPath = path.resolve(__dirname, '../static/manifest.json');
-
-const args = process.argv.slice(2);
-const geckoId = args[0];
-
-if (!geckoId) {
-	console.error('Gecko ID is not provided as an argument.');
-	process.exit(1);
-}
-
-fs.readFile(manifestPath, 'utf8', (err, data) => {
-	if (err) {
-		console.error('Error reading the manifest file:', err);
-		return;
-	}
-
-	const manifest = JSON.parse(data);
-	const updatedManifest = {
-		...manifest,
-		background: {
-			scripts: ['scripts/background.js'],
-			type: 'module'
-		},
-		browser_specific_settings: {
-			...manifest.browser_specific_settings,
-			gecko: {
-				id: geckoId
-			}
-		}
-	};
-
-	fs.writeFile(manifestPath, JSON.stringify(updatedManifest, null, 2), 'utf8', (err) => {
-		if (err) {
-			console.error('Error writing the manifest file:', err);
-			return;
-		}
-
-		console.log('Manifest file updated successfully.');
-	});
-});
diff --git a/holo-key-manager-js-client/README.md b/holo-key-manager-js-client/README.md
index d9c3b38..6b0b558 100644
--- a/holo-key-manager-js-client/README.md
+++ b/holo-key-manager-js-client/README.md
@@ -8,7 +8,6 @@ To fully utilize the Holo Key Manager JS Client, you need to install the Holo Ke
 
 - [Chrome](https://chrome.google.com/webstore/detail/holo-key-manager/eggfhkdnfdhdpmkfpihjjbnncgmhihce)
 - [Edge](https://microsoftedge.microsoft.com/addons/detail/jfecdgefjljjfcflgbhgfkbeofjenceh)
-- [Mozilla](https://addons.mozilla.org/en-US/firefox/addon/holo-key-manager/)
 
 ## Installation and Usage
 
diff --git a/holo-key-manager-js-client/prebuild.cjs b/holo-key-manager-js-client/prebuild.cjs
index 3f40d61..4d745aa 100644
--- a/holo-key-manager-js-client/prebuild.cjs
+++ b/holo-key-manager-js-client/prebuild.cjs
@@ -8,7 +8,6 @@ const path = require('path');
 const generateConfigContent = () => `
 export const browserConfig = {
     ChromeID: '${process.env.CHROME_ID}',
-    FirefoxID: '${process.env.FF_ID}',
     EdgeID: '${process.env.EDGE_ID}'
 };
 `;
diff --git a/holo-key-manager-js-client/src/helpers.ts b/holo-key-manager-js-client/src/helpers.ts
index 60a3524..0ed4fd4 100644
--- a/holo-key-manager-js-client/src/helpers.ts
+++ b/holo-key-manager-js-client/src/helpers.ts
@@ -5,8 +5,6 @@ import { browserConfig } from './browserConfig';
 const getBrowserId = () => {
 	if (navigator.userAgent.indexOf('Chrome') !== -1) {
 		return browserConfig.ChromeID;
-	} else if (navigator.userAgent.indexOf('Firefox') !== -1) {
-		return browserConfig.FirefoxID;
 	} else if (navigator.userAgent.indexOf('Edge') !== -1) {
 		return browserConfig.EdgeID;
 	}
diff --git a/package.json b/package.json
index 90acd0f..117368c 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,6 @@
 		"build:script": "tsc --p scripts/tsconfig.json",
 		"build:removeExport": "node build-scripts/removeExportFromScript.cjs",
 		"build:removeInline": "node build-scripts/removeInlineScript.cjs",
-		"build:replaceForFirefox": "node build-scripts/replaceForFirefox.cjs",
 		"preview": "vite preview",
 		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
 		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",