diff --git a/src/index.js b/src/index.js
index a15e4ef..b6a4914 100644
--- a/src/index.js
+++ b/src/index.js
@@ -5,6 +5,7 @@ const CID = require('cids')
 module.exports = {
   resolver: {
     multicodec: 'raw',
+    defaultHashAlg: 'sha2-256',
     resolve: (binaryBlob, path, callback) => {
       callback(null, {
         value: binaryBlob,
diff --git a/test/index.spec.js b/test/index.spec.js
index a1ac1de..b56157c 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -24,6 +24,10 @@ describe('raw codec', () => {
     expect(resolver.multicodec).to.equal('raw')
   })
 
+  it('defaultHashAlg is sha2-256', () => {
+    expect(resolver.defaultHashAlg).to.equal('sha2-256')
+  })
+
   it('resolver.resolve', () => {
     resolver.resolve(testBlob, 'a/b/c/d', (err, result) => {
       expect(err).to.not.exist()