diff --git a/apps/browser/src/autofill/overlay/iframe-content/autofill-overlay-iframe.service.ts b/apps/browser/src/autofill/overlay/iframe-content/autofill-overlay-iframe.service.ts
index 9cf235ab9f..4512070ff7 100644
--- a/apps/browser/src/autofill/overlay/iframe-content/autofill-overlay-iframe.service.ts
+++ b/apps/browser/src/autofill/overlay/iframe-content/autofill-overlay-iframe.service.ts
@@ -15,7 +15,7 @@ class AutofillOverlayIframeService implements AutofillOverlayIframeServiceInterf
   private iframeMutationObserver: MutationObserver;
   private iframe: HTMLIFrameElement;
   private ariaAlertElement: HTMLDivElement;
-  private ariaAlertTimeout: NodeJS.Timeout;
+  private ariaAlertTimeout: number | NodeJS.Timeout;
   private iframeStyles: Partial<CSSStyleDeclaration> = {
     all: "initial",
     position: "fixed",
@@ -41,7 +41,7 @@ class AutofillOverlayIframeService implements AutofillOverlayIframeServiceInterf
   };
   private foreignMutationsCount = 0;
   private mutationObserverIterations = 0;
-  private mutationObserverIterationsResetTimeout: NodeJS.Timeout;
+  private mutationObserverIterationsResetTimeout: number | NodeJS.Timeout;
   private readonly windowMessageHandlers: AutofillOverlayIframeWindowMessageHandlers = {
     updateAutofillOverlayListHeight: (message) =>
       this.updateElementStyles(this.iframe, message.styles),
diff --git a/apps/browser/src/autofill/services/autofill-overlay-content.service.spec.ts b/apps/browser/src/autofill/services/autofill-overlay-content.service.spec.ts
index fa62bc362d..fb6119d816 100644
--- a/apps/browser/src/autofill/services/autofill-overlay-content.service.spec.ts
+++ b/apps/browser/src/autofill/services/autofill-overlay-content.service.spec.ts
@@ -16,6 +16,21 @@ import {
 import { AutoFillConstants } from "./autofill-constants";
 import AutofillOverlayContentService from "./autofill-overlay-content.service";
 
+function createMutationRecordMock(customFields = {}): MutationRecord {
+  return {
+    addedNodes: mock<NodeList>(),
+    attributeName: "default-attributeName",
+    attributeNamespace: "default-attributeNamespace",
+    nextSibling: null,
+    oldValue: "default-oldValue",
+    previousSibling: null,
+    removedNodes: mock<NodeList>(),
+    target: null,
+    type: "attributes",
+    ...customFields,
+  };
+}
+
 const defaultWindowReadyState = document.readyState;
 const defaultDocumentVisibilityState = document.visibilityState;
 describe("AutofillOverlayContentService", () => {
@@ -1304,9 +1319,7 @@ describe("AutofillOverlayContentService", () => {
         .mockReturnValue(true);
 
       autofillOverlayContentService["handleOverlayElementMutationObserverUpdate"]([
-        mock<MutationRecord>({
-          target: usernameField,
-        }),
+        createMutationRecordMock({ target: usernameField }),
       ]);
 
       expect(usernameField.removeAttribute).not.toHaveBeenCalled();
@@ -1314,10 +1327,7 @@ describe("AutofillOverlayContentService", () => {
 
     it("skips handling the mutation if the record type is not for `attributes`", () => {
       autofillOverlayContentService["handleOverlayElementMutationObserverUpdate"]([
-        mock<MutationRecord>({
-          target: usernameField,
-          type: "childList",
-        }),
+        createMutationRecordMock({ target: usernameField, type: "childList" }),
       ]);
 
       expect(usernameField.removeAttribute).not.toHaveBeenCalled();
@@ -1325,7 +1335,7 @@ describe("AutofillOverlayContentService", () => {
 
     it("removes all element attributes that are not the style attribute", () => {
       autofillOverlayContentService["handleOverlayElementMutationObserverUpdate"]([
-        mock<MutationRecord>({
+        createMutationRecordMock({
           target: usernameField,
           type: "attributes",
           attributeName: "placeholder",
@@ -1337,7 +1347,7 @@ describe("AutofillOverlayContentService", () => {
 
     it("removes all attached style attributes and sets the default styles", () => {
       autofillOverlayContentService["handleOverlayElementMutationObserverUpdate"]([
-        mock<MutationRecord>({
+        createMutationRecordMock({
           target: usernameField,
           type: "attributes",
           attributeName: "style",
diff --git a/apps/browser/src/autofill/services/autofill-overlay-content.service.ts b/apps/browser/src/autofill/services/autofill-overlay-content.service.ts
index ba70cc0548..7e1f811247 100644
--- a/apps/browser/src/autofill/services/autofill-overlay-content.service.ts
+++ b/apps/browser/src/autofill/services/autofill-overlay-content.service.ts
@@ -42,12 +42,12 @@ class AutofillOverlayContentService implements AutofillOverlayContentServiceInte
   private overlayListElement: HTMLElement;
   private mostRecentlyFocusedField: ElementWithOpId<FormFieldElement>;
   private focusedFieldData: FocusedFieldData;
-  private userInteractionEventTimeout: NodeJS.Timeout;
+  private userInteractionEventTimeout: number | NodeJS.Timeout;
   private overlayElementsMutationObserver: MutationObserver;
   private bodyElementMutationObserver: MutationObserver;
   private documentElementMutationObserver: MutationObserver;
   private mutationObserverIterations = 0;
-  private mutationObserverIterationsResetTimeout: NodeJS.Timeout;
+  private mutationObserverIterationsResetTimeout: number | NodeJS.Timeout;
   private autofillFieldKeywordsMap: WeakMap<AutofillField, string> = new WeakMap();
   private eventHandlersMemo: { [key: string]: EventListener } = {};
   private readonly customElementDefaultStyles: Partial<CSSStyleDeclaration> = {
@@ -846,7 +846,10 @@ class AutofillOverlayContentService implements AutofillOverlayContentServiceInte
 
     this.toggleOverlayHidden(true);
     this.clearUserInteractionEventTimeout();
-    this.userInteractionEventTimeout = setTimeout(this.triggerOverlayRepositionUpdates, 750);
+    this.userInteractionEventTimeout = setTimeout(
+      this.triggerOverlayRepositionUpdates,
+      750,
+    ) as unknown as number;
   };
 
   /**
diff --git a/package-lock.json b/package-lock.json
index b7aff24278..c63c6577c3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -178,7 +178,7 @@
         "ts-loader": "9.5.1",
         "tsconfig-paths-webpack-plugin": "4.1.0",
         "type-fest": "2.19.0",
-        "typescript": "4.9.5",
+        "typescript": "5.1.6",
         "url": "0.11.3",
         "util": "0.12.5",
         "wait-on": "7.2.0",
@@ -37421,16 +37421,16 @@
       "integrity": "sha512-/aCDEGatGvZ2BIk+HmLf4ifCJFwvKFNb9/JeZPMulfgFracn9QFcAf5GO8B/mweUjSoblS5In0cWhqpfs/5PQA=="
     },
     "node_modules/typescript": {
-      "version": "4.9.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
-      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.6.tgz",
+      "integrity": "sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
     "node_modules/uglify-js": {
diff --git a/package.json b/package.json
index c33e88c528..231e94192a 100644
--- a/package.json
+++ b/package.json
@@ -139,7 +139,7 @@
     "ts-loader": "9.5.1",
     "tsconfig-paths-webpack-plugin": "4.1.0",
     "type-fest": "2.19.0",
-    "typescript": "4.9.5",
+    "typescript": "5.1.6",
     "url": "0.11.3",
     "util": "0.12.5",
     "wait-on": "7.2.0",
diff --git a/tsconfig.eslint.json b/tsconfig.eslint.json
index 6dd355c8da..c8144b97b9 100644
--- a/tsconfig.eslint.json
+++ b/tsconfig.eslint.json
@@ -34,5 +34,6 @@
       }
     ]
   },
-  "include": ["apps/**/*", "libs/**/*", "bitwarden_license/**/*"]
+  "include": ["apps/**/*", "libs/**/*", "bitwarden_license/**/*"],
+  "exclude": ["**/build"]
 }