diff --git a/package.json b/package.json
index f8f792a2..19f5db11 100644
--- a/package.json
+++ b/package.json
@@ -98,7 +98,7 @@
     "@ethersproject/contracts": "^5.6.2",
     "@ethersproject/providers": "^5.6.8",
     "@ethersproject/transactions": "^5.6.2",
-    "did-resolver": "^3.2.2",
+    "did-resolver": "^4.0.0",
     "ethr-did-registry": "^1.0.0"
   }
 }
diff --git a/src/__tests__/resolver.test.ts b/src/__tests__/resolver.test.ts
index 287fa121..1d8c0218 100644
--- a/src/__tests__/resolver.test.ts
+++ b/src/__tests__/resolver.test.ts
@@ -568,6 +568,165 @@ describe('ethrResolver', () => {
         })
       })
     })
+
+    describe('add expanded service endpoints', () => {
+      it('resolves document', async () => {
+        expect.assertions(2)
+
+        await new EthrDidController(identity, registryContract).setAttribute(
+          stringToBytes32('did/svc/HubService'),
+          JSON.stringify({uri: 'https://hubs.uport.me', transportType: 'http'}),
+          86405,
+          { from: controller }
+        )
+        const { didDocument } = await didResolver.resolve(did)
+        expect(didDocument).toEqual({
+          '@context': expect.anything(),
+          id: did,
+          verificationMethod: [
+            {
+              id: `${did}#controller`,
+              type: 'EcdsaSecp256k1RecoveryMethod2020',
+              controller: did,
+              blockchainAccountId: `eip155:1337:${controller}`,
+            },
+            {
+              id: `${did}#delegate-4`,
+              type: 'EcdsaSecp256k1RecoveryMethod2020',
+              controller: did,
+              blockchainAccountId: `eip155:1337:${delegate2}`,
+            },
+            {
+              id: `${did}#delegate-5`,
+              type: 'EcdsaSecp256k1VerificationKey2019',
+              controller: did,
+              publicKeyHex: '02b97c30de767f084ce3080168ee293053ba33b235d7116a3263d29f1450936b71',
+            },
+            {
+              id: `${did}#delegate-6`,
+              type: 'Ed25519VerificationKey2018',
+              controller: did,
+              publicKeyBase64: Buffer.from(
+                '02b97c30de767f084ce3080168ee293053ba33b235d7116a3263d29f1450936b71',
+                'hex'
+              ).toString('base64'),
+            },
+            {
+              id: `${did}#delegate-7`,
+              type: 'RSAVerificationKey2018',
+              controller: did,
+              publicKeyPem: '-----BEGIN PUBLIC KEY...END PUBLIC KEY-----\r\n',
+            },
+          ],
+          authentication: [`${did}#controller`, `${did}#delegate-4`],
+          assertionMethod: [
+            `${did}#controller`,
+            `${did}#delegate-4`,
+            `${did}#delegate-5`,
+            `${did}#delegate-6`,
+            `${did}#delegate-7`,
+          ],
+          service: [
+            {
+              id: `${did}#service-1`,
+              type: 'HubService',
+              serviceEndpoint: 'https://hubs.uport.me',
+            },
+            {
+              id: `${did}#service-2`,
+              type: 'HubService',
+              serviceEndpoint: { uri: 'https://hubs.uport.me', transportType: 'http' },
+            },
+          ],
+        })
+
+        await new EthrDidController(identity, registryContract).setAttribute(
+          stringToBytes32('did/svc/HubService'),
+          JSON.stringify([{uri: 'https://hubs.uport.me', transportType: 'http'}, {uri: 'libp2p.star/123', transportType: 'libp2p'}]),
+          86405,
+          { from: controller }
+        )
+        const { didDocument: updatedDidDocument } = await didResolver.resolve(did)
+        expect(updatedDidDocument).toEqual({
+          '@context': expect.anything(),
+          id: did,
+          verificationMethod: [
+            {
+              id: `${did}#controller`,
+              type: 'EcdsaSecp256k1RecoveryMethod2020',
+              controller: did,
+              blockchainAccountId: `eip155:1337:${controller}`,
+            },
+            {
+              id: `${did}#delegate-4`,
+              type: 'EcdsaSecp256k1RecoveryMethod2020',
+              controller: did,
+              blockchainAccountId: `eip155:1337:${delegate2}`,
+            },
+            {
+              id: `${did}#delegate-5`,
+              type: 'EcdsaSecp256k1VerificationKey2019',
+              controller: did,
+              publicKeyHex: '02b97c30de767f084ce3080168ee293053ba33b235d7116a3263d29f1450936b71',
+            },
+            {
+              id: `${did}#delegate-6`,
+              type: 'Ed25519VerificationKey2018',
+              controller: did,
+              publicKeyBase64: Buffer.from(
+                '02b97c30de767f084ce3080168ee293053ba33b235d7116a3263d29f1450936b71',
+                'hex'
+              ).toString('base64'),
+            },
+            {
+              id: `${did}#delegate-7`,
+              type: 'RSAVerificationKey2018',
+              controller: did,
+              publicKeyPem: '-----BEGIN PUBLIC KEY...END PUBLIC KEY-----\r\n',
+            },
+          ],
+          authentication: [`${did}#controller`, `${did}#delegate-4`],
+          assertionMethod: [
+            `${did}#controller`,
+            `${did}#delegate-4`,
+            `${did}#delegate-5`,
+            `${did}#delegate-6`,
+            `${did}#delegate-7`,
+          ],
+          service: [
+            {
+              id: `${did}#service-1`,
+              type: 'HubService',
+              serviceEndpoint: 'https://hubs.uport.me',
+            },
+            {
+              id: `${did}#service-2`,
+              type: 'HubService',
+              serviceEndpoint: { uri: 'https://hubs.uport.me', transportType: 'http' },
+            },
+            {
+              id: `${did}#service-3`,
+              type: 'HubService',
+              serviceEndpoint: [{uri: 'https://hubs.uport.me', transportType: 'http'}, {uri: 'libp2p.star/123', transportType: 'libp2p'}],
+            },
+          ],
+        })
+
+        // undo side effects of this test
+        await new EthrDidController(identity, registryContract).revokeAttribute(
+          stringToBytes32('did/svc/HubService'),
+          JSON.stringify([{uri: 'https://hubs.uport.me', transportType: 'http'}, {uri: 'libp2p.star/123', transportType: 'libp2p'}]),
+          { from: controller }
+        )
+
+        // undo side effects of this test
+        await new EthrDidController(identity, registryContract).revokeAttribute(
+          stringToBytes32('did/svc/HubService'),
+          JSON.stringify({uri: 'https://hubs.uport.me', transportType: 'http'}),
+          { from: controller }
+        )
+      })
+    })
   })
 
   describe('revoke publicKey', () => {
diff --git a/src/resolver.ts b/src/resolver.ts
index fd50e97c..d7e6e3cc 100644
--- a/src/resolver.ts
+++ b/src/resolver.ts
@@ -10,7 +10,7 @@ import {
   DIDResolver,
   ParsedDID,
   Resolvable,
-  ServiceEndpoint,
+  Service,
   VerificationMethod,
 } from 'did-resolver'
 import {
@@ -134,10 +134,11 @@ export class EthrDidResolver {
     let deactivated = false
     let delegateCount = 0
     let serviceCount = 0
+    let endpoint = ''
     const auth: Record<string, string> = {}
     const keyAgreementRefs: Record<string, string> = {}
     const pks: Record<string, VerificationMethod> = {}
-    const services: Record<string, ServiceEndpoint> = {}
+    const services: Record<string, Service> = {}
     for (const event of history) {
       if (blockHeight !== -1 && event.blockNumber > blockHeight) {
         if (nextVersionId > event.blockNumber) {
@@ -217,10 +218,15 @@ export class EthrDidResolver {
               }
               case 'svc':
                 serviceCount++
+                try {
+                  endpoint = JSON.parse(Buffer.from(currentEvent.value.slice(2), 'hex').toString())
+                } catch {
+                  endpoint = Buffer.from(currentEvent.value.slice(2), 'hex').toString()
+                }
                 services[eventIndex] = {
                   id: `${did}#service-${serviceCount}`,
                   type: algorithm,
-                  serviceEndpoint: Buffer.from(currentEvent.value.slice(2), 'hex').toString(),
+                  serviceEndpoint: endpoint,
                 }
                 break
             }
diff --git a/yarn.lock b/yarn.lock
index db41cda1..1ced3e76 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4305,10 +4305,10 @@ dezalgo@^1.0.0:
     asap "^2.0.0"
     wrappy "1"
 
-did-resolver@^3.2.2:
-  version "3.2.2"
-  resolved "https://registry.yarnpkg.com/did-resolver/-/did-resolver-3.2.2.tgz#6f4e252a810f785d1b28a10265fad6dffee25158"
-  integrity sha512-Eeo2F524VM5N3W4GwglZrnul2y6TLTwMQP3In62JdG34NZoqihYyOZLk+5wUW8sSgvIYIcJM8Dlt3xsdKZZ3tg==
+did-resolver@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/did-resolver/-/did-resolver-4.0.0.tgz#fc8f657b4cd7f44c2921051fb046599fbe7d4b31"
+  integrity sha512-/roxrDr9EnAmLs+s9T+8+gcpilMo+IkeytcsGO7dcxvTmVJ+0Rt60HtV8o0UXHhGBo0Q+paMH/0ffXz1rqGFYg==
 
 diff-sequences@^28.1.1:
   version "28.1.1"