diff --git a/client/src/document/organisms/toc/index.tsx b/client/src/document/organisms/toc/index.tsx
index 2e36be93dbfb..99d4fdd20086 100644
--- a/client/src/document/organisms/toc/index.tsx
+++ b/client/src/document/organisms/toc/index.tsx
@@ -48,7 +48,7 @@ export function TOC({ toc, title }: { toc: Toc[]; title?: string }) {
   }, [observedElements, referencedIds]);
 
   useFirstVisibleElement(observedElements, (element: Element | null) => {
-    const id = element ? idByObservedElement.current.get(element) ?? "" : "";
+    const id = element ? (idByObservedElement.current.get(element) ?? "") : "";
     if (id !== currentViewedTocItem) {
       setCurrentViewedTocItem(id);
     }
diff --git a/client/src/user-context.tsx b/client/src/user-context.tsx
index e3556d2884cc..d59b371995c2 100644
--- a/client/src/user-context.tsx
+++ b/client/src/user-context.tsx
@@ -218,7 +218,7 @@ export function UserDataProvider(props: { children: React.ReactNode }) {
         subscriptionType:
           data.subscription_type === "core"
             ? SubscriptionType.MDN_CORE
-            : data.subscription_type ?? null,
+            : (data.subscription_type ?? null),
         subscriberNumber: data.subscriber_number || null,
         email: data.email || null,
         geo: {
diff --git a/cloud-function/src/headers.ts b/cloud-function/src/headers.ts
index 9deeebc3fa95..e595fc448226 100644
--- a/cloud-function/src/headers.ts
+++ b/cloud-function/src/headers.ts
@@ -81,7 +81,7 @@ function getCacheMaxAgeForUrl(url: string): number {
 }
 
 function parseContentType(value: unknown): string {
-  const firstValue = Array.isArray(value) ? value[0] ?? "" : value;
+  const firstValue = Array.isArray(value) ? (value[0] ?? "") : value;
 
   return typeof firstValue === "string" ? firstValue : "";
 }
diff --git a/package.json b/package.json
index e0e085a8f7a4..247d2c15bf11 100644
--- a/package.json
+++ b/package.json
@@ -221,7 +221,7 @@
     "postcss-loader": "^8.1.1",
     "postcss-normalize": "^10.0.1",
     "postcss-preset-env": "^9.6.0",
-    "prettier": "^3.3.2",
+    "prettier": "^3.3.3",
     "prettier-plugin-packagejson": "^2.5.1",
     "prompts": "^2.4.2",
     "react": "^18.3.1",
diff --git a/yarn.lock b/yarn.lock
index fdbb86d65319..8ec0897720ae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12868,10 +12868,10 @@ prettier-plugin-packagejson@^2.5.1:
     sort-package-json "2.10.0"
     synckit "0.9.1"
 
-prettier@^3.3.2:
-  version "3.3.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.3.2.tgz#03ff86dc7c835f2d2559ee76876a3914cec4a90a"
-  integrity sha512-rAVeHYMcv8ATV5d508CFdn+8/pHPpXeIid1DdrPwXnaAdH7cqjVbpJaT5eq4yRAFU/lsbwYwSF/n5iNrdJHPQA==
+prettier@^3.3.3:
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.3.3.tgz#30c54fe0be0d8d12e6ae61dbb10109ea00d53105"
+  integrity sha512-i2tDNA0O5IrMO757lfrdQZCc2jPNDVntV0m/+4whiDfWaTKfMNgR7Qz0NAeGz/nRqF4m5/6CLzbP4/liHt12Ew==
 
 pretty-error@^4.0.0:
   version "4.0.0"