diff --git a/.github/actions/bump-manifest-version.cjs b/.github/actions/bump-manifest-version.cjs
index 36646d58..e02ac0a8 100644
--- a/.github/actions/bump-manifest-version.cjs
+++ b/.github/actions/bump-manifest-version.cjs
@@ -44,6 +44,6 @@ function bumpVersion(existingVersion, type) {
     case 'minor':
       return [major, minor + 1, 0, 0];
     default:
-      throw new Error('Unknown bump type: ' + type);
+      throw new Error(`Unknown bump type: ${type}`);
   }
 }
diff --git a/biome.json b/biome.json
index c2ac71a3..0ba22db4 100644
--- a/biome.json
+++ b/biome.json
@@ -20,7 +20,7 @@
     "rules": {
       "recommended": true,
       "style": {
-        "useTemplate": "off",
+        "useTemplate": "info",
         "noUnusedTemplateLiteral": "off",
         "noUselessElse": "off",
         "noNonNullAssertion": "off"
diff --git a/esbuild/dev.ts b/esbuild/dev.ts
index a1ee4b5b..b6641481 100644
--- a/esbuild/dev.ts
+++ b/esbuild/dev.ts
@@ -98,7 +98,7 @@ function liveReloadPlugin({ target }: { target: Target }): ESBuildPlugin {
       build.onLoad({ filter: /src\/background\/index\.ts$/ }, async (args) => {
         const contents = await readFile(args.path, 'utf8');
         return {
-          contents: reloadScriptBackground + '\n' + contents,
+          contents: `${reloadScriptBackground}\n${contents}`,
           loader: 'ts' as const,
         };
       });
@@ -108,7 +108,7 @@ function liveReloadPlugin({ target }: { target: Target }): ESBuildPlugin {
         async (args) => {
           const contents = await readFile(args.path, 'utf8');
           return {
-            contents: contents + '\n\n\n' + reloadScriptPopup,
+            contents: `${contents}\n\n\n${reloadScriptPopup}`,
             loader: 'tsx' as const,
           };
         },
@@ -116,14 +116,14 @@ function liveReloadPlugin({ target }: { target: Target }): ESBuildPlugin {
       build.onLoad({ filter: /src\/pages\/.+\/index.tsx$/ }, async (args) => {
         const contents = await readFile(args.path, 'utf8');
         return {
-          contents: contents + '\n\n\n' + reloadScriptPages,
+          contents: `${contents}\n\n\n${reloadScriptPages}`,
           loader: 'tsx' as const,
         };
       });
       build.onLoad({ filter: /src\/content\// }, async (args) => {
         const contents = await readFile(args.path, 'utf8');
         return {
-          contents: contents + '\n\n\n' + reloadScriptContent,
+          contents: `${contents}\n\n\n${reloadScriptContent}`,
           loader: 'ts' as const,
         };
       });
diff --git a/esbuild/plugins.ts b/esbuild/plugins.ts
index e810fa66..3f8f21f9 100644
--- a/esbuild/plugins.ts
+++ b/esbuild/plugins.ts
@@ -135,9 +135,9 @@ function processManifestPlugin({
         }
 
         if (channel === 'preview') {
-          json.name = json.name + ' Preview';
+          json.name = `${json.name} Preview`;
         } else if (channel === 'nightly') {
-          json.name = json.name + ' Nightly';
+          json.name = `${json.name} Nightly`;
         }
 
         if (dev) {
diff --git a/scripts/build.ts b/scripts/build.ts
index 59ad74d3..61088d60 100644
--- a/scripts/build.ts
+++ b/scripts/build.ts
@@ -22,7 +22,7 @@ sade('build [target]', true)
   .option('--dev', 'Dev-mode (watch, live-reload)', false)
   .example('chrome --channel=nightly')
   .example('firefox --channel=stable')
-  .describe(['`target` should be one of ' + TARGETS.join(', ')])
+  .describe([`\`target\` should be one of ${TARGETS.join(', ')}`])
   .action(async (target: Target, opts: BuildArgs) => {
     const options = { ...opts, target };
     if (!options.target && !options.dev) {
@@ -36,11 +36,11 @@ sade('build [target]', true)
     }
 
     if (!TARGETS.includes(options.target)) {
-      console.warn('Invalid --target. Must be one of ' + TARGETS.join(', '));
+      console.warn(`Invalid --target. Must be one of ${TARGETS.join(', ')}`);
       process.exit(1);
     }
     if (!CHANNELS.includes(options.channel)) {
-      console.warn('Invalid --channel. Must be one of ' + CHANNELS.join(', '));
+      console.warn(`Invalid --channel. Must be one of ${CHANNELS.join(', ')}`);
       process.exit(1);
     }
 
diff --git a/src/background/services/deduplicator.ts b/src/background/services/deduplicator.ts
index d871b4e6..1f63bdb3 100644
--- a/src/background/services/deduplicator.ts
+++ b/src/background/services/deduplicator.ts
@@ -35,7 +35,7 @@ export class Deduplicator {
 
       if (entry) {
         this.logger.debug(
-          `Deduplicating function=${fn.name}, ${cacheFnArgs ? 'args=' + JSON.stringify(args) : 'without args'}`,
+          `Deduplicating function=${fn.name}, ${cacheFnArgs ? `args=${JSON.stringify(args)}` : 'without args'}`,
         );
         return entry.promise as ReturnType<T>;
       }
diff --git a/src/background/services/openPayments.ts b/src/background/services/openPayments.ts
index 79bed9ad..8d5e87eb 100644
--- a/src/background/services/openPayments.ts
+++ b/src/background/services/openPayments.ts
@@ -763,7 +763,7 @@ export class OpenPaymentsService {
     hash,
     authServer,
   }: VerifyInteractionHashParams): Promise<void> {
-    const grantEndpoint = new URL(authServer).origin + '/';
+    const grantEndpoint = `${new URL(authServer).origin}/`;
     const data = new TextEncoder().encode(
       `${clientNonce}\n${interactNonce}\n${interactRef}\n${grantEndpoint}`,
     );
diff --git a/src/content/keyAutoAdd/lib/keyAutoAdd.ts b/src/content/keyAutoAdd/lib/keyAutoAdd.ts
index 673fb31a..cfb8a457 100644
--- a/src/content/keyAutoAdd/lib/keyAutoAdd.ts
+++ b/src/content/keyAutoAdd/lib/keyAutoAdd.ts
@@ -93,7 +93,7 @@ export class KeyAutoAdd {
       browser.runtime.getURL('pages/progress-connect/index.html'),
     );
     const params = new URLSearchParams({ mode: size });
-    iframeUrl.hash = '?' + params.toString();
+    iframeUrl.hash = `?${params.toString()}`;
     if (this.ui.src !== iframeUrl.href && size !== 'hidden') {
       this.ui.src = iframeUrl.href;
     }
diff --git a/src/content/polyfill.ts b/src/content/polyfill.ts
index 0433a444..9439728f 100644
--- a/src/content/polyfill.ts
+++ b/src/content/polyfill.ts
@@ -31,7 +31,7 @@ import type { MonetizationEventPayload } from '@/shared/messages';
         this.addEventListener('monetization', val);
         handlers.set(this, val);
       } else {
-        throw new Error('val must be a function, got ' + typeof val);
+        throw new Error(`val must be a function, got ${typeof val}`);
       }
     },
   };
diff --git a/src/content/services/monetizationLinkManager.ts b/src/content/services/monetizationLinkManager.ts
index f8c69826..403e2b6a 100644
--- a/src/content/services/monetizationLinkManager.ts
+++ b/src/content/services/monetizationLinkManager.ts
@@ -228,8 +228,7 @@ export class MonetizationLinkManager extends EventEmitter {
       url = new URL(href);
       if (url.protocol !== 'https:') {
         throw new WalletAddressFormatError(
-          `Wallet address URL must be specified as a fully resolved https:// url, ` +
-            `got ${JSON.stringify(href)} `,
+          `Wallet address URL must be specified as a fully resolved https:// url, got ${JSON.stringify(href)} `,
         );
       }
     } catch (e) {
@@ -517,9 +516,7 @@ export class MonetizationLinkManager extends EventEmitter {
     const details = this.monetizationLinks.get(link);
     if (!details) {
       throw new Error(
-        'Could not find details for monetization node ' +
-          // node is removed, so the reference can not be displayed
-          link.outerHTML.slice(0, 200),
+        `Could not find details for monetization node ${link.outerHTML.slice(0, 200)}`,
       );
     }
 
diff --git a/src/pages/shared/lib/hooks.test.tsx b/src/pages/shared/lib/hooks.test.tsx
index 53eb5fd3..89935368 100644
--- a/src/pages/shared/lib/hooks.test.tsx
+++ b/src/pages/shared/lib/hooks.test.tsx
@@ -36,7 +36,7 @@ describe('useLocalStorage', () => {
         <button
           type="button"
           data-testid="set-cb"
-          onClick={() => setData((data) => data + 'Foo')}
+          onClick={() => setData((data) => `${data}Foo`)}
         >
           Set data callback
         </button>
diff --git a/tests/e2e/fixtures/base.ts b/tests/e2e/fixtures/base.ts
index fb0256e4..bdf6db72 100644
--- a/tests/e2e/fixtures/base.ts
+++ b/tests/e2e/fixtures/base.ts
@@ -89,23 +89,17 @@ export const expect = test.expect.extend({
 
     const message = pass
       ? () =>
-          this.utils.matcherHint(assertionName, undefined, undefined, {
+          `${this.utils.matcherHint(assertionName, undefined, undefined, {
             isNot: this.isNot,
-          }) +
-          '\n\n' +
-          `Expected: not ${this.utils.printExpected(expected)}\n` +
-          (matcherResult
+          })}\n\nExpected: not ${this.utils.printExpected(expected)}\n${matcherResult
             ? `Received: ${this.utils.printReceived(matcherResult.actual)}`
-            : '')
+            : ''}`
       : () =>
-          this.utils.matcherHint(assertionName, undefined, undefined, {
+          `${this.utils.matcherHint(assertionName, undefined, undefined, {
             isNot: this.isNot,
-          }) +
-          '\n\n' +
-          `Expected: ${this.utils.printExpected(expected)}\n` +
-          (matcherResult
+          })}\n\nExpected: ${this.utils.printExpected(expected)}\n${matcherResult
             ? `Received: ${this.utils.printReceived(matcherResult.actual)}`
-            : '');
+            : ''}`;
 
     return {
       name: assertionName,
diff --git a/tests/e2e/fixtures/helpers.ts b/tests/e2e/fixtures/helpers.ts
index db930bdd..6a1e8850 100644
--- a/tests/e2e/fixtures/helpers.ts
+++ b/tests/e2e/fixtures/helpers.ts
@@ -175,7 +175,7 @@ export async function loadContext(
   }
 
   if (!context) {
-    throw new Error('Unknown browser: ' + browserName);
+    throw new Error(`Unknown browser: ${browserName}`);
   }
 
   // Note that loading this directly via config -> use({ storageState }) doesn't
@@ -195,7 +195,7 @@ function getPathToExtension(browserName: string) {
   } else if (browserName === 'firefox') {
     pathToExtension = path.join(BUILD_DIR, 'firefox');
   } else {
-    throw new Error('Unknown browser: ' + browserName);
+    throw new Error(`Unknown browser: ${browserName}`);
   }
   return pathToExtension;
 }
@@ -227,7 +227,7 @@ export async function getBackground(
     //
     // }
   } else {
-    throw new Error('Unsupported browser: ' + browserName);
+    throw new Error(`Unsupported browser: ${browserName}`);
   }
 
   if (!background) {
diff --git a/tests/e2e/helpers/testWallet.ts b/tests/e2e/helpers/testWallet.ts
index 2330b4b9..75900a49 100644
--- a/tests/e2e/helpers/testWallet.ts
+++ b/tests/e2e/helpers/testWallet.ts
@@ -84,7 +84,7 @@ export async function revokeKey(
       credentials: 'include',
     });
     if (!res.ok) {
-      throw new Error('Failed to revoke key: ' + (await res.text()));
+      throw new Error(`Failed to revoke key: ${await res.text()}`);
     }
   }, url);
 }