diff --git a/packages/@aws-cdk/pipelines/README.md b/packages/@aws-cdk/pipelines/README.md
index e350d4a0862f5..3dd74c1450883 100644
--- a/packages/@aws-cdk/pipelines/README.md
+++ b/packages/@aws-cdk/pipelines/README.md
@@ -666,6 +666,7 @@ new pipelines.CodeBuildStep('Synth', {
   buildEnvironment: {
     computeType: codebuild.ComputeType.LARGE,
   },
+  timeout: Duration.minutes(90),
 
   // Control Elastic Network Interface creation
   vpc: vpc,
diff --git a/packages/@aws-cdk/pipelines/lib/codepipeline/_codebuild-factory.ts b/packages/@aws-cdk/pipelines/lib/codepipeline/_codebuild-factory.ts
index 75c800aeb84c1..294a8844b81bb 100644
--- a/packages/@aws-cdk/pipelines/lib/codepipeline/_codebuild-factory.ts
+++ b/packages/@aws-cdk/pipelines/lib/codepipeline/_codebuild-factory.ts
@@ -137,16 +137,16 @@ export class CodeBuildFactory implements ICodePipelineActionFactory {
     const factory = CodeBuildFactory.fromShellStep(constructId, step, {
       projectName: step.projectName,
       role: step.role,
-      projectOptions: {
+      ...additional,
+      projectOptions: mergeCodeBuildOptions(additional?.projectOptions, {
         buildEnvironment: step.buildEnvironment,
         rolePolicy: step.rolePolicyStatements,
         securityGroups: step.securityGroups,
         partialBuildSpec: step.partialBuildSpec,
         vpc: step.vpc,
         subnetSelection: step.subnetSelection,
-        ...additional?.projectOptions,
-      },
-      ...additional,
+        timeout: step.timeout,
+      }),
     });
 
     return {
@@ -279,6 +279,7 @@ export class CodeBuildFactory implements ICodePipelineActionFactory {
       securityGroups: projectOptions.securityGroups,
       buildSpec: projectBuildSpec,
       role: this.props.role,
+      timeout: projectOptions.timeout,
     });
 
     if (this.props.additionalDependable) {
@@ -393,6 +394,7 @@ export function mergeCodeBuildOptions(...opts: Array<CodeBuildOptions | undefine
       partialBuildSpec: mergeBuildSpecs(a.partialBuildSpec, b.partialBuildSpec),
       vpc: b.vpc ?? a.vpc,
       subnetSelection: b.subnetSelection ?? a.subnetSelection,
+      timeout: b.timeout ?? a.timeout,
     };
   }
 }
diff --git a/packages/@aws-cdk/pipelines/lib/codepipeline/codebuild-step.ts b/packages/@aws-cdk/pipelines/lib/codepipeline/codebuild-step.ts
index 3047b43c5c755..f835e261aba3d 100644
--- a/packages/@aws-cdk/pipelines/lib/codepipeline/codebuild-step.ts
+++ b/packages/@aws-cdk/pipelines/lib/codepipeline/codebuild-step.ts
@@ -1,3 +1,4 @@
+import { Duration } from '@aws-cdk/core';
 import * as codebuild from '@aws-cdk/aws-codebuild';
 import * as ec2 from '@aws-cdk/aws-ec2';
 import * as iam from '@aws-cdk/aws-iam';
@@ -82,6 +83,15 @@ export interface CodeBuildStepProps extends ShellStepProps {
    * @default - Security group will be automatically created.
    */
   readonly securityGroups?: ec2.ISecurityGroup[];
+
+  /**
+   * The number of minutes after which AWS CodeBuild stops the build if it's
+   * not complete. For valid values, see the timeoutInMinutes field in the AWS
+   * CodeBuild User Guide.
+   *
+   * @default Duration.hours(1)
+   */
+  readonly timeout?: Duration;
 }
 
 /**
@@ -144,6 +154,15 @@ export class CodeBuildStep extends ShellStep {
    */
   readonly securityGroups?: ec2.ISecurityGroup[];
 
+  /**
+   * The number of minutes after which AWS CodeBuild stops the build if it's
+   * not complete. For valid values, see the timeoutInMinutes field in the AWS
+   * CodeBuild User Guide.
+   *
+   * @default Duration.hours(1)
+   */
+  readonly timeout?: Duration;
+
   private _project?: codebuild.IProject;
 
   constructor(id: string, props: CodeBuildStepProps) {
@@ -157,6 +176,7 @@ export class CodeBuildStep extends ShellStep {
     this.role = props.role;
     this.rolePolicyStatements = props.rolePolicyStatements;
     this.securityGroups = props.securityGroups;
+    this.timeout = props.timeout;
   }
 
   /**
diff --git a/packages/@aws-cdk/pipelines/lib/codepipeline/codepipeline.ts b/packages/@aws-cdk/pipelines/lib/codepipeline/codepipeline.ts
index eae138f195b5b..67dd7c2f35cc4 100644
--- a/packages/@aws-cdk/pipelines/lib/codepipeline/codepipeline.ts
+++ b/packages/@aws-cdk/pipelines/lib/codepipeline/codepipeline.ts
@@ -4,7 +4,7 @@ import * as cp from '@aws-cdk/aws-codepipeline';
 import * as cpa from '@aws-cdk/aws-codepipeline-actions';
 import * as ec2 from '@aws-cdk/aws-ec2';
 import * as iam from '@aws-cdk/aws-iam';
-import { Aws, CfnCapabilities, Fn, Lazy, PhysicalName, Stack } from '@aws-cdk/core';
+import { Aws, CfnCapabilities, Duration, Fn, Lazy, PhysicalName, Stack } from '@aws-cdk/core';
 import * as cxapi from '@aws-cdk/cx-api';
 import { Construct, Node } from 'constructs';
 import { AssetType, FileSet, IFileSetProducer, ManualApprovalStep, ShellStep, StackAsset, StackDeployment, Step } from '../blueprint';
@@ -258,6 +258,15 @@ export interface CodeBuildOptions {
    * @default - All private subnets.
    */
   readonly subnetSelection?: ec2.SubnetSelection;
+
+  /**
+   * The number of minutes after which AWS CodeBuild stops the build if it's
+   * not complete. For valid values, see the timeoutInMinutes field in the AWS
+   * CodeBuild User Guide.
+   *
+   * @default Duration.hours(1)
+   */
+  readonly timeout?: Duration;
 }
 
 
diff --git a/packages/@aws-cdk/pipelines/rosetta/default.ts-fixture b/packages/@aws-cdk/pipelines/rosetta/default.ts-fixture
index a4de907c3732f..84101e41a9aa6 100644
--- a/packages/@aws-cdk/pipelines/rosetta/default.ts-fixture
+++ b/packages/@aws-cdk/pipelines/rosetta/default.ts-fixture
@@ -1,6 +1,6 @@
 // Fixture with packages imported, but nothing else
 import { Construct } from 'constructs';
-import { CfnOutput, Stage, Stack, StackProps, StageProps } from '@aws-cdk/core';
+import { CfnOutput, Duration, Stage, Stack, StackProps, StageProps } from '@aws-cdk/core';
 import cdk = require('@aws-cdk/core');
 import codepipeline = require('@aws-cdk/aws-codepipeline');
 import cpactions = require('@aws-cdk/aws-codepipeline-actions');
diff --git a/packages/@aws-cdk/pipelines/test/codepipeline/codebuild-step.test.ts b/packages/@aws-cdk/pipelines/test/codepipeline/codebuild-step.test.ts
index 3c57f3037907b..c905c3cbc4cfa 100644
--- a/packages/@aws-cdk/pipelines/test/codepipeline/codebuild-step.test.ts
+++ b/packages/@aws-cdk/pipelines/test/codepipeline/codebuild-step.test.ts
@@ -1,5 +1,5 @@
 import { Template, Match } from '@aws-cdk/assertions';
-import { Stack } from '@aws-cdk/core';
+import { Duration, Stack } from '@aws-cdk/core';
 import * as cdkp from '../../lib';
 import { PIPELINE_ENV, TestApp, ModernTestGitHubNpmPipeline, AppWithOutput } from '../testhelpers';
 
@@ -43,6 +43,68 @@ test('additionalinputs creates the right commands', () => {
   });
 });
 
+test('long duration steps are supported', () => {
+  // WHEN
+  new cdkp.CodePipeline(pipelineStack, 'Pipeline', {
+    synth: new cdkp.CodeBuildStep('Synth', {
+      commands: ['/bin/true'],
+      input: cdkp.CodePipelineSource.gitHub('test/test', 'main'),
+      additionalInputs: {
+        'some/deep/directory': cdkp.CodePipelineSource.gitHub('test2/test2', 'main'),
+      },
+      timeout: Duration.minutes(180),
+    }),
+  });
+
+  // THEN
+  Template.fromStack(pipelineStack).hasResourceProperties('AWS::CodeBuild::Project', {
+    TimeoutInMinutes: 180,
+  });
+});
+
+test('timeout can be configured as part of defaults', () => {
+  // WHEN
+  new cdkp.CodePipeline(pipelineStack, 'Pipeline', {
+    synth: new cdkp.CodeBuildStep('Synth', {
+      commands: ['/bin/true'],
+      input: cdkp.CodePipelineSource.gitHub('test/test', 'main'),
+      additionalInputs: {
+        'some/deep/directory': cdkp.CodePipelineSource.gitHub('test2/test2', 'main'),
+      },
+    }),
+    codeBuildDefaults: {
+      timeout: Duration.minutes(180),
+    },
+  });
+
+  // THEN
+  Template.fromStack(pipelineStack).hasResourceProperties('AWS::CodeBuild::Project', {
+    TimeoutInMinutes: 180,
+  });
+});
+
+test('timeout from defaults can be overridden', () => {
+  // WHEN
+  new cdkp.CodePipeline(pipelineStack, 'Pipeline', {
+    synth: new cdkp.CodeBuildStep('Synth', {
+      commands: ['/bin/true'],
+      input: cdkp.CodePipelineSource.gitHub('test/test', 'main'),
+      additionalInputs: {
+        'some/deep/directory': cdkp.CodePipelineSource.gitHub('test2/test2', 'main'),
+      },
+      timeout: Duration.minutes(888),
+    }),
+    codeBuildDefaults: {
+      timeout: Duration.minutes(180),
+    },
+  });
+
+  // THEN
+  Template.fromStack(pipelineStack).hasResourceProperties('AWS::CodeBuild::Project', {
+    TimeoutInMinutes: 888,
+  });
+});
+
 test('envFromOutputs works even with very long stage and stack names', () => {
   const pipeline = new ModernTestGitHubNpmPipeline(pipelineStack, 'Cdk');