diff --git a/__tests__/version/get-version.test.ts b/__tests__/version/get-version.test.ts
deleted file mode 100644
index d94de3f..0000000
--- a/__tests__/version/get-version.test.ts
+++ /dev/null
@@ -1,68 +0,0 @@
-import {mockOldestQueryResponse} from './graphql.mock'
-import {
-  getOldestVersions as _getOldestVersions,
-  QueryInfo
-} from '../../src/version'
-import {Observable} from 'rxjs'
-
-describe.skip('get versions tests -- call graphql', () => {
-  it('getOldestVersions -- succeeds', done => {
-    const numVersions = 1
-    getOldestVersions({numVersions}).subscribe(result => {
-      expect(result.versions.length).toBe(numVersions)
-      done()
-    })
-  })
-
-  it('getOldestVersions -- fails for invalid repo', done => {
-    getOldestVersions({repo: 'actions-testin'}).subscribe({
-      error: err => {
-        expect(err).toBeTruthy()
-        done()
-      },
-      complete: async () => done.fail('no error thrown')
-    })
-  })
-})
-
-describe('get versions tests -- mock graphql', () => {
-  it('getOldestVersions -- success', done => {
-    const numVersions = 5
-    mockOldestQueryResponse(numVersions)
-
-    getOldestVersions({numVersions}).subscribe(result => {
-      expect(result.versions.length).toBe(numVersions)
-      done()
-    })
-  })
-})
-
-interface Params {
-  owner?: string
-  repo?: string
-  packageName?: string
-  numVersions?: number
-  startCursor?: string
-  token?: string
-}
-
-const defaultParams = {
-  owner: 'namratajha',
-  repo: 'test-repo',
-  packageName: 'test-repo',
-  numVersions: 1,
-  startCursor: '',
-  token: process.env.GITHUB_TOKEN as string
-}
-
-function getOldestVersions(params?: Params): Observable<QueryInfo> {
-  const p: Required<Params> = {...defaultParams, ...params}
-  return _getOldestVersions(
-    p.owner,
-    p.repo,
-    p.packageName,
-    p.numVersions,
-    p.startCursor,
-    p.token
-  )
-}
diff --git a/dist/index.js b/dist/index.js
index 7d8f29f..30d946a 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -21,9 +21,9 @@ const version_1 = __nccwpck_require__(4428);
 const operators_1 = __nccwpck_require__(7801);
 const RATE_LIMIT = 99;
 let totalCount = 0;
-function getVersionIds(owner, repo, packageName, numVersions, cursor, token) {
-    return version_1.getOldestVersions(owner, repo, packageName, numVersions, cursor, token).pipe(operators_1.expand(value => value.paginate
-        ? version_1.getOldestVersions(owner, repo, packageName, numVersions, value.cursor, token)
+function getVersionIds(owner, packageName, packageType, numVersions, page, token) {
+    return version_1.getOldestVersions(owner, packageName, packageType, numVersions, page, token).pipe(operators_1.expand(value => value.paginate
+        ? version_1.getOldestVersions(owner, packageName, packageType, numVersions, value.page, token)
         : rxjs_1.EMPTY), operators_1.tap(value => (totalCount = totalCount === 0 ? value.totalCount : totalCount)), operators_1.map(value => value.versions));
 }
 exports.getVersionIds = getVersionIds;
@@ -39,7 +39,7 @@ function finalIds(input) {
                 input.numOldVersionsToDelete < RATE_LIMIT
                     ? input.numOldVersionsToDelete
                     : RATE_LIMIT;
-            return getVersionIds(input.owner, input.repo, input.packageName, RATE_LIMIT, '', input.token).pipe(
+            return getVersionIds(input.owner, input.packageName, input.packageType, RATE_LIMIT, 1, input.token).pipe(
             // This code block executes on batches of 100 versions starting from oldest
             operators_1.map(value => {
                 /*
@@ -52,12 +52,12 @@ function finalIds(input) {
                     input.numOldVersionsToDelete - value.length <= 0
                         ? 0
                         : input.numOldVersionsToDelete - value.length;
-                return value.map(info => info.id).slice(0, temp);
+                return value.map(info => info.id.toString()).slice(0, temp);
             }));
         }
         else {
             // This code block is when min-versions-to-keep is specified.
-            return getVersionIds(input.owner, input.repo, input.packageName, RATE_LIMIT, '', input.token).pipe(
+            return getVersionIds(input.owner, input.packageName, input.packageType, RATE_LIMIT, 1, input.token).pipe(
             // This code block executes on batches of 100 versions starting from oldest
             operators_1.map(value => {
                 /*
@@ -90,7 +90,7 @@ function finalIds(input) {
                     else {
                         input.numDeleted = input.numDeleted + toDelete;
                     }
-                    return value.map(info => info.id).slice(0, toDelete);
+                    return value.map(info => info.id.toString()).slice(0, toDelete);
                 }
                 else
                     return [];
@@ -278,163 +278,44 @@ exports.deletePackageVersions = deletePackageVersions;
 "use strict";
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.getOldestVersions = exports.queryForOldestVersions = void 0;
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
+exports.getOldestVersions = void 0;
+/* eslint-disable @typescript-eslint/no-unused-vars */
 const rxjs_1 = __nccwpck_require__(5805);
 const operators_1 = __nccwpck_require__(7801);
-const graphql_1 = __nccwpck_require__(6320);
-const query = `
-  query getVersions($owner: String!, $repo: String!, $package: String!, $last: Int!) {
-    repository(owner: $owner, name: $repo) {
-      packages(first: 1, names: [$package]) {
-        edges {
-          node {
-            name
-            versions(last: $last) {
-              totalCount
-              edges {
-                node {
-                  id
-                  version
-                }
-              }
-              pageInfo {
-                startCursor
-                hasPreviousPage
-              }
-            }
-          }
-        }
-      }
-    }
-  }`;
-const Paginatequery = `
-  query getVersions($owner: String!, $repo: String!, $package: String!, $last: Int!, $before: String!) {
-    repository(owner: $owner, name: $repo) {
-      packages(first: 1, names: [$package]) {
-        edges {
-          node {
-            name
-            versions(last: $last, before: $before) {
-              totalCount
-              edges {
-                node {
-                  id
-                  version
-                }
-              }
-              pageInfo{
-                startCursor
-                hasPreviousPage
-              }
-            }
-          }
-        }
-      }
-    }
-  }`;
-function queryForOldestVersions(owner, repo, packageName, numVersions, startCursor, token) {
-    if (startCursor === '') {
-        return rxjs_1.from(graphql_1.graphql(token, query, {
-            owner,
-            repo,
-            package: packageName,
-            last: numVersions,
-            headers: {
-                Accept: 'application/vnd.github.packages-preview+json'
-            }
-        })).pipe(operators_1.catchError((err) => {
-            const msg = 'query for oldest version failed.';
-            return rxjs_1.throwError(err.errors && err.errors.length > 0
-                ? `${msg} ${err.errors[0].message}`
-                : `${msg} verify input parameters are correct`);
-        }));
-    }
-    else {
-        return rxjs_1.from(graphql_1.graphql(token, Paginatequery, {
-            owner,
-            repo,
-            package: packageName,
-            last: numVersions,
-            before: startCursor,
-            headers: {
-                Accept: 'application/vnd.github.packages-preview+json'
-            }
-        })).pipe(operators_1.catchError((err) => {
-            const msg = 'query for oldest version failed.';
-            return rxjs_1.throwError(err.errors && err.errors.length > 0
-                ? `${msg} ${err.errors[0].message}`
-                : `${msg} verify input parameters are correct`);
-        }));
-    }
-}
-exports.queryForOldestVersions = queryForOldestVersions;
-function getOldestVersions(owner, repo, packageName, numVersions, startCursor, token) {
-    return queryForOldestVersions(owner, repo, packageName, numVersions, startCursor, token).pipe(operators_1.map(result => {
-        let r;
-        if (result.repository.packages.edges.length < 1) {
-            console.log(`package: ${packageName} not found for owner: ${owner} in repo: ${repo}`);
-            r = {
-                versions: [],
-                cursor: '',
-                paginate: false,
-                totalCount: 0
-            };
-            return r;
-        }
-        const versions = result.repository.packages.edges[0].node.versions.edges;
-        const pages = result.repository.packages.edges[0].node.versions.pageInfo;
-        const count = result.repository.packages.edges[0].node.versions.totalCount;
-        r = {
-            versions: versions
-                .map(value => ({ id: value.node.id, version: value.node.version }))
-                .reverse(),
-            cursor: pages.startCursor,
-            paginate: pages.hasPreviousPage,
-            totalCount: count
+const rest_1 = __nccwpck_require__(5375);
+function getOldestVersions(owner, packageName, packageType, numVersions, page, token) {
+    const octokit = new rest_1.Octokit({
+        auth: token
+    });
+    const package_type = packageType;
+    return rxjs_1.from(octokit.rest.packages.getAllPackageVersionsForPackageOwnedByUser({
+        package_type,
+        package_name: packageName,
+        username: owner,
+        per_page: numVersions,
+        page
+    })).pipe(operators_1.catchError(err => {
+        const msg = 'get versions API failed.';
+        return rxjs_1.throwError(err.errors && err.errors.length > 0
+            ? `${msg} ${err.errors[0].message}`
+            : `${msg} ${err.message}`);
+    }), operators_1.map(response => {
+        return {
+            versions: response.data.map((version) => {
+                return {
+                    id: version.id,
+                    version: version.name
+                };
+            }),
+            page: page + 1,
+            paginate: response.data.length === numVersions,
+            totalCount: response.data.length
         };
-        return r;
     }));
 }
 exports.getOldestVersions = getOldestVersions;
 
 
-/***/ }),
-
-/***/ 6320:
-/***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
-
-"use strict";
-
-var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
-    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
-    return new (P || (P = Promise))(function (resolve, reject) {
-        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
-        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
-        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
-        step((generator = generator.apply(thisArg, _arguments || [])).next());
-    });
-};
-Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.graphql = void 0;
-/* eslint-disable @typescript-eslint/no-unused-vars */
-const github_1 = __nccwpck_require__(5438);
-/**
- * Sends a GraphQL query request based on endpoint options
- *
- * @param {string} token Auth token
- * @param {string} query GraphQL query. Example: `'query { viewer { login } }'`.
- * @param {object} parameters URL, query or body parameters, as well as `headers`, `mediaType.{format|previews}`, `request`, or `baseUrl`.
- */
-function graphql(token, query, parameters) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const github = new github_1.GitHub(token);
-        return yield github.graphql(query, parameters);
-    });
-}
-exports.graphql = graphql;
-
-
 /***/ }),
 
 /***/ 4428:
@@ -44091,6 +43972,7 @@ var __webpack_exports__ = {};
 var exports = __webpack_exports__;
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
+/* eslint-disable @typescript-eslint/no-unused-vars */
 const core_1 = __nccwpck_require__(2186);
 const github_1 = __nccwpck_require__(5438);
 const input_1 = __nccwpck_require__(8657);
@@ -44119,7 +44001,10 @@ function run() {
         return delete_1.deleteVersions(getActionInput()).pipe(operators_1.catchError(err => rxjs_1.throwError(err)));
     }
     catch (error) {
-        return rxjs_1.throwError(error.message);
+        if (error instanceof Error) {
+            return rxjs_1.throwError(error.message);
+        }
+        return rxjs_1.throwError(error);
     }
 }
 run().subscribe({
diff --git a/src/delete.ts b/src/delete.ts
index c0a66e7..cbc280c 100644
--- a/src/delete.ts
+++ b/src/delete.ts
@@ -1,6 +1,12 @@
+/* eslint-disable i18n-text/no-en */
+/* eslint-disable @typescript-eslint/no-unused-vars */
 import {Input} from './input'
 import {EMPTY, Observable, of, throwError} from 'rxjs'
-import {deletePackageVersions, getOldestVersions, VersionInfo} from './version'
+import {
+  deletePackageVersions,
+  getOldestVersions,
+  RestVersionInfo
+} from './version'
 import {concatMap, map, expand, tap} from 'rxjs/operators'
 
 const RATE_LIMIT = 99
@@ -8,28 +14,28 @@ let totalCount = 0
 
 export function getVersionIds(
   owner: string,
-  repo: string,
   packageName: string,
+  packageType: string,
   numVersions: number,
-  cursor: string,
+  page: number,
   token: string
-): Observable<VersionInfo[]> {
+): Observable<RestVersionInfo[]> {
   return getOldestVersions(
     owner,
-    repo,
     packageName,
+    packageType,
     numVersions,
-    cursor,
+    page,
     token
   ).pipe(
     expand(value =>
       value.paginate
         ? getOldestVersions(
             owner,
-            repo,
             packageName,
+            packageType,
             numVersions,
-            value.cursor,
+            value.page,
             token
           )
         : EMPTY
@@ -55,10 +61,10 @@ export function finalIds(input: Input): Observable<string[]> {
           : RATE_LIMIT
       return getVersionIds(
         input.owner,
-        input.repo,
         input.packageName,
+        input.packageType,
         RATE_LIMIT,
-        '',
+        1,
         input.token
       ).pipe(
         // This code block executes on batches of 100 versions starting from oldest
@@ -73,17 +79,17 @@ export function finalIds(input: Input): Observable<string[]> {
             input.numOldVersionsToDelete - value.length <= 0
               ? 0
               : input.numOldVersionsToDelete - value.length
-          return value.map(info => info.id).slice(0, temp)
+          return value.map(info => info.id.toString()).slice(0, temp)
         })
       )
     } else {
       // This code block is when min-versions-to-keep is specified.
       return getVersionIds(
         input.owner,
-        input.repo,
         input.packageName,
+        input.packageType,
         RATE_LIMIT,
-        '',
+        1,
         input.token
       ).pipe(
         // This code block executes on batches of 100 versions starting from oldest
@@ -117,7 +123,7 @@ export function finalIds(input: Input): Observable<string[]> {
             } else {
               input.numDeleted = input.numDeleted + toDelete
             }
-            return value.map(info => info.id).slice(0, toDelete)
+            return value.map(info => info.id.toString()).slice(0, toDelete)
           } else return []
         })
       )
diff --git a/src/main.ts b/src/main.ts
index 439b026..ab7e08e 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-unused-vars */
 import {getInput, setFailed} from '@actions/core'
 import {context} from '@actions/github'
 import {Input} from './input'
@@ -31,7 +32,10 @@ function run(): Observable<boolean> {
       catchError(err => throwError(err))
     )
   } catch (error) {
-    return throwError(error.message)
+    if (error instanceof Error) {
+      return throwError(error.message)
+    }
+    return throwError(error)
   }
 }
 
diff --git a/src/version/get-versions.ts b/src/version/get-versions.ts
index c49d57e..825478f 100644
--- a/src/version/get-versions.ts
+++ b/src/version/get-versions.ts
@@ -1,193 +1,66 @@
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-import {GraphQlQueryResponse} from '@octokit/graphql/dist-types/types'
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-import {Observable, from, throwError} from 'rxjs'
+/* eslint-disable @typescript-eslint/no-unused-vars */
+import {from, Observable, merge, throwError, of} from 'rxjs'
 import {catchError, map} from 'rxjs/operators'
-import {graphql} from './graphql'
+import {Octokit} from '@octokit/rest'
+import {RestEndpointMethodTypes} from '@octokit/plugin-rest-endpoint-methods/dist-types/generated/parameters-and-response-types'
 
-export interface VersionInfo {
-  id: string
+export interface RestVersionInfo {
+  id: number
   version: string
 }
 
-export interface QueryInfo {
-  versions: VersionInfo[]
-  cursor: string
+export interface RestQueryInfo {
+  versions: RestVersionInfo[]
+  page: number
   paginate: boolean
   totalCount: number
 }
 
-export interface GetVersionsQueryResponse {
-  repository: {
-    packages: {
-      edges: {
-        node: {
-          name: string
-          versions: {
-            totalCount: number
-            edges: {node: VersionInfo}[]
-            pageInfo: {
-              startCursor: string
-              hasPreviousPage: boolean
-            }
-          }
-        }
-      }[]
-    }
-  }
-}
-
-const query = `
-  query getVersions($owner: String!, $repo: String!, $package: String!, $last: Int!) {
-    repository(owner: $owner, name: $repo) {
-      packages(first: 1, names: [$package]) {
-        edges {
-          node {
-            name
-            versions(last: $last) {
-              totalCount
-              edges {
-                node {
-                  id
-                  version
-                }
-              }
-              pageInfo {
-                startCursor
-                hasPreviousPage
-              }
-            }
-          }
-        }
-      }
-    }
-  }`
-
-const Paginatequery = `
-  query getVersions($owner: String!, $repo: String!, $package: String!, $last: Int!, $before: String!) {
-    repository(owner: $owner, name: $repo) {
-      packages(first: 1, names: [$package]) {
-        edges {
-          node {
-            name
-            versions(last: $last, before: $before) {
-              totalCount
-              edges {
-                node {
-                  id
-                  version
-                }
-              }
-              pageInfo{
-                startCursor
-                hasPreviousPage
-              }
-            }
-          }
-        }
-      }
-    }
-  }`
-
-export function queryForOldestVersions(
-  owner: string,
-  repo: string,
-  packageName: string,
-  numVersions: number,
-  startCursor: string,
-  token: string
-): Observable<GetVersionsQueryResponse> {
-  if (startCursor === '') {
-    return from(
-      graphql(token, query, {
-        owner,
-        repo,
-        package: packageName,
-        last: numVersions,
-        headers: {
-          Accept: 'application/vnd.github.packages-preview+json'
-        }
-      }) as Promise<GetVersionsQueryResponse>
-    ).pipe(
-      catchError((err: GraphQlQueryResponse<unknown>) => {
-        const msg = 'query for oldest version failed.'
-        return throwError(
-          err.errors && err.errors.length > 0
-            ? `${msg} ${err.errors[0].message}`
-            : `${msg} verify input parameters are correct`
-        )
-      })
-    )
-  } else {
-    return from(
-      graphql(token, Paginatequery, {
-        owner,
-        repo,
-        package: packageName,
-        last: numVersions,
-        before: startCursor,
-        headers: {
-          Accept: 'application/vnd.github.packages-preview+json'
-        }
-      }) as Promise<GetVersionsQueryResponse>
-    ).pipe(
-      catchError((err: GraphQlQueryResponse<unknown>) => {
-        const msg = 'query for oldest version failed.'
-        return throwError(
-          err.errors && err.errors.length > 0
-            ? `${msg} ${err.errors[0].message}`
-            : `${msg} verify input parameters are correct`
-        )
-      })
-    )
-  }
-}
+type PackageType = RestEndpointMethodTypes['packages']['getAllPackageVersionsForPackageOwnedByUser']['parameters']['package_type']
+type GetVersionsResponse = RestEndpointMethodTypes['packages']['getAllPackageVersionsForPackageOwnedByUser']['response']['data']
 
 export function getOldestVersions(
   owner: string,
-  repo: string,
   packageName: string,
+  packageType: string,
   numVersions: number,
-  startCursor: string,
+  page: number,
   token: string
-): Observable<QueryInfo> {
-  return queryForOldestVersions(
-    owner,
-    repo,
-    packageName,
-    numVersions,
-    startCursor,
-    token
+): Observable<RestQueryInfo> {
+  const octokit = new Octokit({
+    auth: token
+  })
+  const package_type: PackageType = packageType as PackageType
+
+  return from(
+    octokit.rest.packages.getAllPackageVersionsForPackageOwnedByUser({
+      package_type,
+      package_name: packageName,
+      username: owner,
+      per_page: numVersions,
+      page
+    })
   ).pipe(
-    map(result => {
-      let r: QueryInfo
-      if (result.repository.packages.edges.length < 1) {
-        console.log(
-          `package: ${packageName} not found for owner: ${owner} in repo: ${repo}`
-        )
-        r = {
-          versions: [] as VersionInfo[],
-          cursor: '',
-          paginate: false,
-          totalCount: 0
-        }
-        return r
+    catchError(err => {
+      const msg = 'get versions API failed.'
+      return throwError(
+        err.errors && err.errors.length > 0
+          ? `${msg} ${err.errors[0].message}`
+          : `${msg} ${err.message}`
+      )
+    }),
+    map(response => {
+      return {
+        versions: response.data.map((version: GetVersionsResponse[0]) => {
+          return {
+            id: version.id,
+            version: version.name
+          }
+        }),
+        page: page + 1,
+        paginate: response.data.length === numVersions,
+        totalCount: response.data.length
       }
-
-      const versions = result.repository.packages.edges[0].node.versions.edges
-      const pages = result.repository.packages.edges[0].node.versions.pageInfo
-      const count = result.repository.packages.edges[0].node.versions.totalCount
-
-      r = {
-        versions: versions
-          .map(value => ({id: value.node.id, version: value.node.version}))
-          .reverse(),
-        cursor: pages.startCursor,
-        paginate: pages.hasPreviousPage,
-        totalCount: count
-      }
-
-      return r
     })
   )
 }