diff --git a/.gitignore b/.gitignore
index 25017502..2cdfa3d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,5 +10,3 @@ vercel_token
 # IDE
 .vscode
 *.code-workspace
-
-.vercel
diff --git a/src/common/utils.js b/src/common/utils.js
index 1215fc9a..f5bee1fc 100644
--- a/src/common/utils.js
+++ b/src/common/utils.js
@@ -300,11 +300,16 @@ const CONSTANTS = {
   ONE_DAY: 86400,
 };
 
+const OWNER_AFFILIATIONS = ["OWNER", "COLLABORATOR", "ORGANIZATION_MEMBER"];
+
 const SECONDARY_ERROR_MESSAGES = {
   MAX_RETRY:
     "Please add an env variable called PAT_1 with your github token in vercel",
   USER_NOT_FOUND: "Make sure the provided username is not an organization",
   GRAPHQL_ERROR: "Please try again later",
+  INVALID_AFFILIATION: `Invalid owner affiliations. Valid values are: ${OWNER_AFFILIATIONS.join(
+    ", ",
+  )}`,
 };
 
 /**
@@ -324,6 +329,7 @@ class CustomError extends Error {
   static MAX_RETRY = "MAX_RETRY";
   static USER_NOT_FOUND = "USER_NOT_FOUND";
   static GRAPHQL_ERROR = "GRAPHQL_ERROR";
+  static INVALID_AFFILIATION = "INVALID_AFFILIATION";
 }
 
 /**
@@ -423,6 +429,36 @@ const parseEmojis = (str) => {
     return toEmoji.get(emoji) || "";
   });
 };
+/**
+ * Parse owner affiliations.
+ *
+ * @param {string[]} affiliations
+ * @returns {string[]} Parsed affiliations.
+ *
+ * @throws {CustomError} If affiliations contains invalid values.
+ */
+const parseOwnerAffiliations = (affiliations) => {
+  // Set default value for ownerAffiliations.
+  // NOTE: Done here since parseArray() will always return an empty array even nothing
+  //was specified.
+  affiliations =
+    affiliations && affiliations.length > 0
+      ? affiliations.map((affiliation) => affiliation.toUpperCase())
+      : ["OWNER"];
+
+  // Check if ownerAffiliations contains valid values.
+  if (
+    affiliations.some(
+      (affiliation) => !OWNER_AFFILIATIONS.includes(affiliation),
+    )
+  ) {
+    throw new CustomError(
+      "Invalid query parameter",
+      CustomError.INVALID_AFFILIATION,
+    );
+  }
+  return affiliations;
+};
 
 export {
   ERROR_CARD_LENGTH,
@@ -441,10 +477,12 @@ export {
   wrapTextMultiline,
   logger,
   CONSTANTS,
+  OWNER_AFFILIATIONS,
   CustomError,
   MissingParamError,
   measureText,
   lowercaseTrim,
   chunkArray,
   parseEmojis,
+  parseOwnerAffiliations,
 };
diff --git a/src/fetchers/stats-fetcher.js b/src/fetchers/stats-fetcher.js
index 74510128..5da5bc72 100644
--- a/src/fetchers/stats-fetcher.js
+++ b/src/fetchers/stats-fetcher.js
@@ -10,13 +10,14 @@ import {
   MissingParamError,
   request,
   wrapTextMultiline,
+  parseOwnerAffiliations,
 } from "../common/utils.js";
 
 dotenv.config();
 
 // GraphQL queries.
 const GRAPHQL_REPOS_FIELD = `
-  repositories(first: 100, ownerAffiliations: OWNER, orderBy: {direction: DESC, field: STARGAZERS}, after: $after) {
+  repositories(first: 100, after: $after, ownerAffiliations: $ownerAffiliations, orderBy: {direction: DESC, field: STARGAZERS}) {
     totalCount
     nodes {
       name
@@ -40,7 +41,7 @@ const GRAPHQL_REPOS_QUERY = `
 `;
 
 const GRAPHQL_STATS_QUERY = `
-  query userInfo($login: String!, $after: String) {
+  query userInfo($login: String!, $after: String, $ownerAffiliations: [RepositoryAffiliation]) {
     user(login: $login) {
       name
       login
@@ -92,6 +93,7 @@ const fetcher = (variables, token) => {
  * Fetch stats information for a given username.
  *
  * @param {string} username Github username.
+ * @param {string[]} ownerAffiliations The owner affiliations to filter by. Default: OWNER.
  * @returns {Promise<import('../common/types').StatsFetcher>} GraphQL Stats object.
  *
  * @description This function supports multi-page fetching if the 'FETCH_MULTI_PAGE_STARS' environment variable is set to true.
@@ -105,7 +107,7 @@ const statsFetcher = async (username, ownerAffiliations) => {
       login: username,
       first: 100,
       after: endCursor,
-      ownerAffiliations: [ownerAffiliations],
+      ownerAffiliations: ownerAffiliations,
     };
     let res = await retryer(fetcher, variables);
     if (res.data.errors) return res;
@@ -202,14 +204,7 @@ const fetchStats = async (
     contributedTo: 0,
     rank: { level: "C", score: 0 },
   };
-
-  // Set default value for ownerAffiliations.
-  // NOTE: Done here since parseArray() will always return an empty array even nothing
-  //was specified.
-  ownerAffiliations =
-    ownerAffiliations && ownerAffiliations.length > 0
-      ? ownerAffiliations
-      : ["OWNER"];
+  ownerAffiliations = parseOwnerAffiliations(ownerAffiliations);
 
   let res = await statsFetcher(username, ownerAffiliations);
 
diff --git a/src/fetchers/top-languages-fetcher.js b/src/fetchers/top-languages-fetcher.js
index 54f86179..6649113a 100644
--- a/src/fetchers/top-languages-fetcher.js
+++ b/src/fetchers/top-languages-fetcher.js
@@ -6,6 +6,7 @@ import {
   MissingParamError,
   request,
   wrapTextMultiline,
+  parseOwnerAffiliations,
 } from "../common/utils.js";
 
 /**
@@ -61,14 +62,7 @@ const fetchTopLanguages = async (
   ownerAffiliations = [],
 ) => {
   if (!username) throw new MissingParamError(["username"]);
-
-  // Set default value for ownerAffiliations.
-  // NOTE: Done here since parseArray() will always return an empty array even nothing
-  //was specified.
-  ownerAffiliations =
-    ownerAffiliations && ownerAffiliations.length > 0
-      ? ownerAffiliations
-      : ["OWNER"];
+  ownerAffiliations = parseOwnerAffiliations(ownerAffiliations);
 
   const res = await retryer(fetcher, { login: username, ownerAffiliations });