diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d62684f..e9a5d3c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,5 +19,6 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - uses: ./
-      with: 
-        milliseconds: 1000
\ No newline at end of file
+      with:
+        # to allow the invalid wrapper jar present in test data
+        allow-checksums: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
diff --git a/__tests__/validate.test.ts b/__tests__/validate.test.ts
index 838df46..8e4f359 100644
--- a/__tests__/validate.test.ts
+++ b/__tests__/validate.test.ts
@@ -4,7 +4,8 @@ import * as validate from '../src/validate'
 test('validates wrapper jars', async () => {
   const invalidWrapperJars = await validate.findInvalidWrapperJars(
     path.resolve('.'),
-    false
+    false,
+    []
   )
   expect(invalidWrapperJars.length).toBe(1)
   expect(invalidWrapperJars[0]).toEqual(
diff --git a/action.yml b/action.yml
index c82dc5b..5cc5eeb 100644
--- a/action.yml
+++ b/action.yml
@@ -6,6 +6,10 @@ inputs:
     description: 'Allow snapshot Gradle versions'
     required: false
     default: 'false'
+  allow-checksums:
+    description: 'Allow arbitrary checksums, comma separated'
+    required: false
+    default: ''
 runs:
   using: 'node12'
   main: 'dist/index.js'
diff --git a/dist/index.js b/dist/index.js
index b35efae..8de39e8 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -341,7 +341,8 @@ function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
             const allowSnapshots = core.getInput('allow-snapshots') === 'true';
-            const invalidWrapperJars = yield validate.findInvalidWrapperJars(path.resolve('.'), allowSnapshots);
+            const allowChecksums = core.getInput('allow-checksums').split(',');
+            const invalidWrapperJars = yield validate.findInvalidWrapperJars(path.resolve('.'), allowSnapshots, allowChecksums);
             if (invalidWrapperJars.length > 0) {
                 core.setFailed(`Invalid wrapper jars ${invalidWrapperJars}`);
             }
@@ -942,11 +943,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const find = __importStar(__webpack_require__(625));
 const checksums = __importStar(__webpack_require__(762));
 const hash = __importStar(__webpack_require__(652));
-function findInvalidWrapperJars(gitRepoRoot, allowSnapshots) {
+function findInvalidWrapperJars(gitRepoRoot, allowSnapshots, allowChecksums) {
     return __awaiter(this, void 0, void 0, function* () {
         const wrapperJars = yield find.findWrapperJars(gitRepoRoot);
         if (wrapperJars.length > 0) {
             const validChecksums = yield checksums.fetchValidChecksums(allowSnapshots);
+            validChecksums.push(...allowChecksums);
             const invalidWrapperJars = [];
             for (const wrapperJar of wrapperJars) {
                 const sha = yield hash.sha256File(wrapperJar);
diff --git a/src/main.ts b/src/main.ts
index 75ae0ca..cccc911 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -6,9 +6,11 @@ import * as validate from './validate'
 export async function run(): Promise<void> {
   try {
     const allowSnapshots = core.getInput('allow-snapshots') === 'true'
+    const allowChecksums = core.getInput('allow-checksums').split(',')
     const invalidWrapperJars = await validate.findInvalidWrapperJars(
       path.resolve('.'),
-      allowSnapshots
+      allowSnapshots,
+      allowChecksums
     )
     if (invalidWrapperJars.length > 0) {
       core.setFailed(`Invalid wrapper jars ${invalidWrapperJars}`)
diff --git a/src/validate.ts b/src/validate.ts
index 372b2be..d49c173 100644
--- a/src/validate.ts
+++ b/src/validate.ts
@@ -4,11 +4,13 @@ import * as hash from './hash'
 
 export async function findInvalidWrapperJars(
   gitRepoRoot: string,
-  allowSnapshots: boolean
+  allowSnapshots: boolean,
+  allowChecksums: string[]
 ): Promise<string[]> {
   const wrapperJars = await find.findWrapperJars(gitRepoRoot)
   if (wrapperJars.length > 0) {
     const validChecksums = await checksums.fetchValidChecksums(allowSnapshots)
+    validChecksums.push(...allowChecksums)
     const invalidWrapperJars: string[] = []
     for (const wrapperJar of wrapperJars) {
       const sha = await hash.sha256File(wrapperJar)