diff --git a/tests/unit/GithubUtilsTest.js b/tests/unit/GithubUtilsTest.ts
similarity index 88%
rename from tests/unit/GithubUtilsTest.js
rename to tests/unit/GithubUtilsTest.ts
index ba4510794686..794139286527 100644
--- a/tests/unit/GithubUtilsTest.js
+++ b/tests/unit/GithubUtilsTest.ts
@@ -1,15 +1,69 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+
 /**
  * @jest-environment node
  */
 import * as core from '@actions/core';
+import type {Writable} from 'type-fest';
 import GithubUtils from '../../.github/libs/GithubUtils';
 
 const mockGetInput = jest.fn();
 const mockListIssues = jest.fn();
 
+type DeployBlockers = {
+    url: string;
+    number: number;
+    isResolved: boolean;
+};
+
+type PullRequest = {
+    url: string;
+    number: number;
+    isVerified: boolean;
+};
+
+type Label = {
+    id: number;
+    number?: number;
+    isVerified?: boolean;
+    node_id: string;
+    url: string;
+    name: string;
+    color: string;
+    default: boolean;
+    description: string;
+};
+
+type ExpectedReponse = {
+    PRList: PullRequest[];
+    labels: Label[];
+    tag: string;
+    title: string;
+    url: string;
+    number: number;
+    deployBlockers: DeployBlockers[];
+    internalQAPRList: string[];
+    isTimingDashboardChecked: boolean;
+    isFirebaseChecked: boolean;
+    isGHStatusChecked: boolean;
+};
+
+type Issue = {
+    url: string;
+    title: string;
+    labels: Label[];
+    body: string;
+};
+
+type ObjectMethodData<T> = {
+    data: T;
+};
+
+const asMutable = <T>(value: T): Writable<T> => value as Writable<T>;
+
 beforeAll(() => {
     // Mock core module
-    core.getInput = mockGetInput;
+    asMutable(core).getInput = mockGetInput;
 
     // Mock octokit module
     const moctokit = {
@@ -26,8 +80,10 @@ beforeAll(() => {
                 listForRepo: mockListIssues,
             },
         },
-        paginate: jest.fn().mockImplementation((objectMethod) => objectMethod().then(({data}) => data)),
+        paginate: jest.fn().mockImplementation(<T>(objectMethod: () => Promise<ObjectMethodData<T>>) => objectMethod().then(({data}) => data)),
     };
+
+    // @ts-expect-error TODO: Remove this once GithubUtils (https://github.com/Expensify/App/issues/25382) is migrated to TypeScript.
     GithubUtils.internalOctokit = moctokit;
 });
 
@@ -38,7 +94,7 @@ afterEach(() => {
 
 describe('GithubUtils', () => {
     describe('getStagingDeployCash', () => {
-        const baseIssue = {
+        const baseIssue: Issue = {
             url: 'https://api.github.com/repos/Andrew-Test-Org/Public-Test-Repo/issues/29',
             title: 'Andrew Test Issue',
             labels: [
@@ -60,7 +116,7 @@ describe('GithubUtils', () => {
         issueWithDeployBlockers.body +=
             '\r\n**Deploy Blockers:**\r\n- [ ] https://github.com/Expensify/App/issues/1\r\n- [x] https://github.com/Expensify/App/issues/2\r\n- [ ] https://github.com/Expensify/App/pull/1234\r\n';
 
-        const baseExpectedResponse = {
+        const baseExpectedResponse: ExpectedReponse = {
             PRList: [
                 {
                     url: 'https://github.com/Expensify/App/pull/21',
@@ -119,13 +175,13 @@ describe('GithubUtils', () => {
         ];
 
         test('Test finding an open issue with no PRs successfully', () => {
-            const bareIssue = {
+            const bareIssue: Issue = {
                 ...baseIssue,
                 // eslint-disable-next-line max-len
                 body: '**Release Version:** `1.0.1-47`\r\n**Compare Changes:** https://github.com/Expensify/App/compare/production...staging\r\n\r\ncc @Expensify/applauseleads\n',
             };
 
-            const bareExpectedResponse = {
+            const bareExpectedResponse: ExpectedReponse = {
                 ...baseExpectedResponse,
                 PRList: [],
             };
@@ -193,7 +249,9 @@ describe('GithubUtils', () => {
                 ['https://github.com/Expensify/Expensify/issues/156481'],
                 ['https://docs.google.com/document/d/1mMFh-m1seOES48r3zNqcvfuTvr3qOAsY6n5rP4ejdXE/edit?ts=602420d2#'],
             ])('getPullRequestNumberFromURL("%s")', (input) => {
-                expect(() => GithubUtils.getPullRequestNumberFromURL(input)).toThrow(new Error(`Provided URL ${input} is not a Github Pull Request!`));
+                expect(() => {
+                    GithubUtils.getPullRequestNumberFromURL(input);
+                }).toThrow(new Error(`Provided URL ${input} is not a Github Pull Request!`));
             });
         });
     });
@@ -218,7 +276,9 @@ describe('GithubUtils', () => {
                 ['https://github.com/Expensify/Expensify/pull/156481'],
                 ['https://docs.google.com/document/d/1mMFh-m1seOES48r3zNqcvfuTvr3qOAsY6n5rP4ejdXE/edit?ts=602420d2#'],
             ])('getIssueNumberFromURL("%s")', (input) => {
-                expect(() => GithubUtils.getIssueNumberFromURL(input)).toThrow(new Error(`Provided URL ${input} is not a Github Issue!`));
+                expect(() => {
+                    GithubUtils.getIssueNumberFromURL(input);
+                }).toThrow(new Error(`Provided URL ${input} is not a Github Issue!`));
             });
         });
     });
@@ -247,7 +307,9 @@ describe('GithubUtils', () => {
             test.each([['https://www.google.com/'], ['https://docs.google.com/document/d/1mMFh-m1seOES48r3zNqcvfuTvr3qOAsY6n5rP4ejdXE/edit?ts=602420d2#']])(
                 'getIssueOrPullRequestNumberFromURL("%s")',
                 (input) => {
-                    expect(() => GithubUtils.getIssueOrPullRequestNumberFromURL(input)).toThrow(new Error(`Provided URL ${input} is not a valid Github Issue or Pull Request!`));
+                    expect(() => {
+                        GithubUtils.getIssueOrPullRequestNumberFromURL(input);
+                    }).toThrow(new Error(`Provided URL ${input} is not a valid Github Issue or Pull Request!`));
                 },
             );
         });
@@ -350,12 +412,13 @@ describe('GithubUtils', () => {
                         list: jest.fn().mockResolvedValue({data: mockPRs}),
                     },
                 },
-                paginate: jest.fn().mockImplementation((objectMethod) => objectMethod().then(({data}) => data)),
+                paginate: jest.fn().mockImplementation(<T>(objectMethod: () => Promise<ObjectMethodData<T>>) => objectMethod().then(({data}) => data)),
             }),
         }));
 
         const octokit = mockGithub().getOctokit();
         const githubUtils = class extends GithubUtils {};
+        // @ts-expect-error TODO: Remove this once GithubUtils (https://github.com/Expensify/App/issues/25382) is migrated to TypeScript.
         githubUtils.internalOctokit = octokit;
         const tag = '1.0.2-12';
         const basePRList = [
@@ -404,8 +467,8 @@ describe('GithubUtils', () => {
             `${lineBreak}${closedCheckbox}${basePRList[5]}` +
             `${lineBreak}`;
 
-        test('Test no verified PRs', () =>
-            githubUtils.generateStagingDeployCashBody(tag, basePRList).then((issueBody) => {
+        test('Test no verified PRs', () => {
+            githubUtils.generateStagingDeployCashBody(tag, basePRList).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${baseExpectedOutput}` +
                         `${openCheckbox}${basePRList[2]}` +
@@ -419,10 +482,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test some verified PRs', () =>
-            githubUtils.generateStagingDeployCashBody(tag, basePRList, [basePRList[0]]).then((issueBody) => {
+        test('Test some verified PRs', () => {
+            githubUtils.generateStagingDeployCashBody(tag, basePRList, [basePRList[0]]).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${baseExpectedOutput}` +
                         `${openCheckbox}${basePRList[2]}` +
@@ -436,10 +500,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test all verified PRs', () =>
-            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList).then((issueBody) => {
+        test('Test all verified PRs', () => {
+            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${allVerifiedExpectedOutput}` +
                         `${lineBreak}${deployerVerificationsHeader}` +
@@ -448,10 +513,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test no resolved deploy blockers', () =>
-            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList, baseDeployBlockerList).then((issueBody) => {
+        test('Test no resolved deploy blockers', () => {
+            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList, baseDeployBlockerList).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${allVerifiedExpectedOutput}` +
                         `${lineBreak}${deployBlockerHeader}` +
@@ -463,10 +529,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}${lineBreak}` +
                         `${lineBreak}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test some resolved deploy blockers', () =>
-            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList, baseDeployBlockerList, [baseDeployBlockerList[0]]).then((issueBody) => {
+        test('Test some resolved deploy blockers', () => {
+            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList, baseDeployBlockerList, [baseDeployBlockerList[0]]).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${allVerifiedExpectedOutput}` +
                         `${lineBreak}${deployBlockerHeader}` +
@@ -478,10 +545,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test all resolved deploy blockers', () =>
-            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList, baseDeployBlockerList, baseDeployBlockerList).then((issueBody) => {
+        test('Test all resolved deploy blockers', () => {
+            githubUtils.generateStagingDeployCashBody(tag, basePRList, basePRList, baseDeployBlockerList, baseDeployBlockerList).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${baseExpectedOutput}` +
                         `${closedCheckbox}${basePRList[2]}` +
@@ -498,10 +566,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test internalQA PRs', () =>
-            githubUtils.generateStagingDeployCashBody(tag, [...basePRList, ...internalQAPRList]).then((issueBody) => {
+        test('Test internalQA PRs', () => {
+            githubUtils.generateStagingDeployCashBody(tag, [...basePRList, ...internalQAPRList]).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${baseExpectedOutput}` +
                         `${openCheckbox}${basePRList[2]}` +
@@ -518,10 +587,11 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
 
-        test('Test some verified internalQA PRs', () =>
-            githubUtils.generateStagingDeployCashBody(tag, [...basePRList, ...internalQAPRList], [], [], [], [internalQAPRList[0]]).then((issueBody) => {
+        test('Test some verified internalQA PRs', () => {
+            githubUtils.generateStagingDeployCashBody(tag, [...basePRList, ...internalQAPRList], [], [], [], [internalQAPRList[0]]).then((issueBody: string) => {
                 expect(issueBody).toBe(
                     `${baseExpectedOutput}` +
                         `${openCheckbox}${basePRList[2]}` +
@@ -538,7 +608,8 @@ describe('GithubUtils', () => {
                         `${lineBreak}${openCheckbox}${ghVerification}` +
                         `${lineBreakDouble}${ccApplauseLeads}`,
                 );
-            }));
+            });
+        });
     });
 
     describe('getPullRequestURLFromNumber', () => {