diff --git a/packages/@aws-cdk/app-delivery/test/integ.cicd.ts b/packages/@aws-cdk/app-delivery/test/integ.cicd.ts
index f694086d116ac..e0263b6c3633d 100644
--- a/packages/@aws-cdk/app-delivery/test/integ.cicd.ts
+++ b/packages/@aws-cdk/app-delivery/test/integ.cicd.ts
@@ -19,8 +19,8 @@ const source = new cpactions.GitHubSourceAction({
   owner: 'awslabs',
   repo: 'aws-cdk',
   oauthToken: cdk.SecretValue.plainText('DummyToken'),
-  trigger: cpactions.TriggerType.Poll,
-  outputArtifactName: 'Artifact_CICDGitHubF8BA7ADD',
+  trigger: cpactions.GitHubTrigger.Poll,
+  output: sourceOutput,
 });
 pipeline.addStage({
   name: 'Source',
diff --git a/packages/@aws-cdk/aws-codepipeline-actions/README.md b/packages/@aws-cdk/aws-codepipeline-actions/README.md
index bc7e86af8c600..a0a87107ae2a3 100644
--- a/packages/@aws-cdk/aws-codepipeline-actions/README.md
+++ b/packages/@aws-cdk/aws-codepipeline-actions/README.md
@@ -50,7 +50,7 @@ const sourceAction = new codepipeline_actions.GitHubSourceAction({
   oauthToken: token.value,
   output: sourceOutput,
   branch: 'develop', // default: 'master'
-  trigger: codepipeline_actions.TriggerType.Poll // default: 'WebHook', 'None' is also possible for no Source trigger
+  trigger: codepipeline_actions.GitHubTrigger.Poll // default: 'WebHook', 'None' is also possible for no Source trigger
 });
 pipeline.addStage({
   name: 'Source',
diff --git a/packages/@aws-cdk/aws-codepipeline-actions/lib/github/source-action.ts b/packages/@aws-cdk/aws-codepipeline-actions/lib/github/source-action.ts
index 5eae766e51251..51d85c2edd80d 100644
--- a/packages/@aws-cdk/aws-codepipeline-actions/lib/github/source-action.ts
+++ b/packages/@aws-cdk/aws-codepipeline-actions/lib/github/source-action.ts
@@ -2,7 +2,10 @@ import codepipeline = require('@aws-cdk/aws-codepipeline');
 import { SecretValue } from '@aws-cdk/cdk';
 import { sourceArtifactBounds } from '../common';
 
-export enum TriggerType {
+/**
+ * If and how the GitHub source action should be triggered
+ */
+export enum GitHubTrigger {
   None = 'None',
   Poll = 'Poll',
   WebHook = 'WebHook',
@@ -47,9 +50,13 @@ export interface GitHubSourceActionProps extends codepipeline.CommonActionProps
   /**
    * How AWS CodePipeline should be triggered
    *
-   * @default "WebHook"
+   * With the default value "WebHook", a webhook is created in GitHub that triggers the action
+   * With "Poll", CodePipeline periodically checks the source for changes
+   * With "None", the action is not triggered through changes in the source
+   *
+   * @default GitHubTrigger.WebHook
    */
-  readonly trigger?: TriggerType;
+  readonly trigger?: GitHubTrigger;
 }
 
 /**
@@ -71,7 +78,7 @@ export class GitHubSourceAction extends codepipeline.Action {
         Repo: props.repo,
         Branch: props.branch || "master",
         OAuthToken: props.oauthToken.toString(),
-        PollForSourceChanges: (props.trigger && props.trigger === TriggerType.Poll) || false,
+        PollForSourceChanges: props.trigger === GitHubTrigger.Poll,
       },
     });
 
@@ -79,7 +86,7 @@ export class GitHubSourceAction extends codepipeline.Action {
   }
 
   protected bind(info: codepipeline.ActionBind): void {
-    if (!this.props.trigger || this.props.trigger === TriggerType.WebHook) {
+    if (!this.props.trigger || this.props.trigger === GitHubTrigger.WebHook) {
       new codepipeline.CfnWebhook(info.scope, 'WebhookResource', {
         authentication: 'GITHUB_HMAC',
         authenticationConfiguration: {
diff --git a/packages/@aws-cdk/aws-codepipeline-actions/test/test.pipeline.ts b/packages/@aws-cdk/aws-codepipeline-actions/test/test.pipeline.ts
index f7fe7b7639a4a..00de8197a20cb 100644
--- a/packages/@aws-cdk/aws-codepipeline-actions/test/test.pipeline.ts
+++ b/packages/@aws-cdk/aws-codepipeline-actions/test/test.pipeline.ts
@@ -80,12 +80,12 @@ export = {
         new cpactions.GitHubSourceAction({
           actionName: 'GH',
           runOrder: 8,
-          outputArtifactName: 'A',
+          output: new codepipeline.Artifact('A'),
           branch: 'branch',
           oauthToken: SecretValue.plainText(secret.stringValue),
           owner: 'foo',
           repo: 'bar',
-          trigger: cpactions.TriggerType.Poll
+          trigger: cpactions.GitHubTrigger.Poll
         }),
       ],
     });
@@ -100,63 +100,23 @@ export = {
     expect(stack).to(not(haveResourceLike('AWS::CodePipeline::Webhook')));
 
     expect(stack).to(haveResourceLike('AWS::CodePipeline::Pipeline', {
-      "ArtifactStore": {
-      "Location": {
-        "Ref": "PArtifactsBucket5E711C12"
-      },
-      "Type": "S3"
-      },
-      "RoleArn": {
-      "Fn::GetAtt": [
-        "PRole07BDC907",
-        "Arn"
-      ]
-      },
       "Stages": [
       {
         "Actions": [
-        {
-          "ActionTypeId": {
-          "Category": "Source",
-          "Owner": "ThirdParty",
-          "Provider": "GitHub",
-          "Version": "1"
-          },
-          "Configuration": {
-          "Owner": "foo",
-          "Repo": "bar",
-          "Branch": "branch",
-          "OAuthToken": {
-            "Ref": "GitHubToken"
-          },
-          "PollForSourceChanges": true
-          },
-          "InputArtifacts": [],
-          "Name": "GH",
-          "OutputArtifacts": [
           {
-            "Name": "A"
+            "Configuration": {
+              "PollForSourceChanges": true
+            },
+            "Name": "GH"
           }
-          ],
-          "RunOrder": 8
-        }
         ],
         "Name": "Source"
       },
       {
         "Actions": [
-        {
-          "ActionTypeId": {
-          "Category": "Approval",
-          "Owner": "AWS",
-          "Provider": "Manual",
-          "Version": "1"
-          },
-          "InputArtifacts": [],
-          "Name": "Boo",
-          "OutputArtifacts": [],
-          "RunOrder": 1
-        }
+          {
+            "Name": "Boo",
+          }
         ],
         "Name": "Two"
       }
@@ -179,12 +139,12 @@ export = {
         new cpactions.GitHubSourceAction({
           actionName: 'GH',
           runOrder: 8,
-          outputArtifactName: 'A',
+          output: new codepipeline.Artifact('A'),
           branch: 'branch',
           oauthToken: SecretValue.plainText(secret.stringValue),
           owner: 'foo',
           repo: 'bar',
-          trigger: cpactions.TriggerType.None
+          trigger: cpactions.GitHubTrigger.None
         }),
       ],
     });
@@ -199,63 +159,23 @@ export = {
     expect(stack).to(not(haveResourceLike('AWS::CodePipeline::Webhook')));
 
     expect(stack).to(haveResourceLike('AWS::CodePipeline::Pipeline', {
-      "ArtifactStore": {
-      "Location": {
-        "Ref": "PArtifactsBucket5E711C12"
-      },
-      "Type": "S3"
-      },
-      "RoleArn": {
-      "Fn::GetAtt": [
-        "PRole07BDC907",
-        "Arn"
-      ]
-      },
       "Stages": [
       {
         "Actions": [
-        {
-          "ActionTypeId": {
-          "Category": "Source",
-          "Owner": "ThirdParty",
-          "Provider": "GitHub",
-          "Version": "1"
-          },
-          "Configuration": {
-          "Owner": "foo",
-          "Repo": "bar",
-          "Branch": "branch",
-          "OAuthToken": {
-            "Ref": "GitHubToken"
-          },
-          "PollForSourceChanges": false
-          },
-          "InputArtifacts": [],
-          "Name": "GH",
-          "OutputArtifacts": [
           {
-            "Name": "A"
+            "Configuration": {
+              "PollForSourceChanges": false
+            },
+            "Name": "GH"
           }
-          ],
-          "RunOrder": 8
-        }
         ],
         "Name": "Source"
       },
       {
         "Actions": [
-        {
-          "ActionTypeId": {
-          "Category": "Approval",
-          "Owner": "AWS",
-          "Provider": "Manual",
-          "Version": "1"
-          },
-          "InputArtifacts": [],
-          "Name": "Boo",
-          "OutputArtifacts": [],
-          "RunOrder": 1
-        }
+          {
+            "Name": "Boo",
+          }
         ],
         "Name": "Two"
       }