diff --git a/README.md b/README.md
index c0cb324c..5c124300 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
 * [Buildkite](https://buildkite.com/)
 * [GitHub Actions CI](https://github.com/features/actions)
 * [CodeFresh](https://codefresh.io/)
+* [AWS CodeBuild](https://docs.aws.amazon.com/codebuild/index.html)
 
 ## Installation:
 
@@ -50,6 +51,7 @@ There are optional environment variables for other build systems as well:
 - `COVERALLS_SERVICE_JOB_NUMBER` (a number that uniquely identifies the build's job)
 - `COVERALLS_RUN_AT` (a date string for the time that the job ran. RFC 3339 dates work. This defaults to your build system's date/time if you don't set it)
 - `COVERALLS_PARALLEL` (set to `true` when running jobs in parallel, requires a completion webhook. More info here: <https://docs.coveralls.io/parallel-build-webhook>)
+- `COVERALLS_PROJECT_ROOT_PATH` (an absolute path to the root of your project. Useful if you have multiple projects in one repo (ie: /frontend, /backend) or run your coverage from a subdirectory)
 
 ### GitHub Actions CI
 
diff --git a/lib/convertLcovToCoveralls.js b/lib/convertLcovToCoveralls.js
index bcbb9933..466376a1 100644
--- a/lib/convertLcovToCoveralls.js
+++ b/lib/convertLcovToCoveralls.js
@@ -27,7 +27,7 @@ const detailsToBranches = details => {
   return branches;
 };
 
-const convertLcovFileObject = (file, filepath) => {
+const convertLcovFileObject = (file, filepath, projectRootPath) => {
   const rootpath = filepath;
   filepath = path.resolve(rootpath, file.file);
   const source = fs.readFileSync(filepath, 'utf8');
@@ -36,7 +36,7 @@ const convertLcovFileObject = (file, filepath) => {
   const branches = detailsToBranches(file.branches.details);
 
   return {
-    name: path.relative(rootpath, path.resolve(rootpath, file.file)).split(path.sep).join('/'),
+    name: path.relative(projectRootPath || rootpath, path.resolve(rootpath, file.file)).split(path.sep).join('/'),
     source,
     coverage,
     branches
@@ -112,7 +112,7 @@ const convertLcovToCoveralls = (input, options, cb) => {
       file.file = cleanFilePath(file.file);
       const currentFilePath = path.resolve(filepath, file.file);
       if (fs.existsSync(currentFilePath)) {
-        postJson.source_files.push(convertLcovFileObject(file, filepath));
+        postJson.source_files.push(convertLcovFileObject(file, filepath, options.project_root_path));
       }
     });
 
diff --git a/lib/getOptions.js b/lib/getOptions.js
index 3ac55794..2eb5968a 100644
--- a/lib/getOptions.js
+++ b/lib/getOptions.js
@@ -143,6 +143,20 @@ const getBaseOptions = cb => {
     git_message = process.env.CF_COMMIT_MESSAGE;
   }
 
+  if (process.env.CODEBUILD_BUILD_ARN) {
+    options.service_name = 'AWS CodeBuild';
+    options.service_job_id = process.env.CODEBUILD_BUILD_ID;
+
+    if (process.env.CODEBUILD_WEBHOOK_TRIGGER && process.env.CODEBUILD_WEBHOOK_TRIGGER.startsWith('pr/')) {
+      options.service_pull_request = process.env.CODEBUILD_WEBHOOK_TRIGGER.substr(3);
+    }
+
+    git_commit = process.env.CODEBUILD_RESOLVED_SOURCE_VERSION;
+    git_branch = process.env.CODEBUILD_WEBHOOK_HEAD_REF && process.env.CODEBUILD_WEBHOOK_HEAD_REF.startsWith('refs/heads/') ?
+      process.env.CODEBUILD_WEBHOOK_HEAD_REF.substr(11) :
+      process.env.CODEBUILD_SOURCE_VERSION;
+  }
+
   options.run_at = process.env.COVERALLS_RUN_AT || JSON.stringify(new Date()).slice(1, -1);
 
   if (process.env.COVERALLS_SERVICE_NUMBER) {
@@ -157,6 +171,14 @@ const getBaseOptions = cb => {
     options.service_job_id = process.env.COVERALLS_SERVICE_JOB_ID;
   }
 
+  if (process.env.COVERALLS_GIT_COMMIT) {
+    git_commit = process.env.COVERALLS_GIT_COMMIT;
+  }
+
+  if (process.env.COVERALLS_GIT_BRANCH) {
+    git_branch = process.env.COVERALLS_GIT_BRANCH;
+  }
+
   if (!git_commit || !git_branch) {
     const data = detectLocalGit();
     if (data) {
@@ -169,6 +191,10 @@ const getBaseOptions = cb => {
     options.parallel = true;
   }
 
+  if (process.env.COVERALLS_PROJECT_ROOT_PATH) {
+    options.project_root_path = process.env.COVERALLS_PROJECT_ROOT_PATH;
+  }
+
   // load a .coveralls.yml file
   const coveralls_yaml_conf = (() => {
     const yml = path.join(process.cwd(), '.coveralls.yml');
diff --git a/test/convertLcovToCoveralls.js b/test/convertLcovToCoveralls.js
index 2adaa835..b59ab116 100644
--- a/test/convertLcovToCoveralls.js
+++ b/test/convertLcovToCoveralls.js
@@ -72,6 +72,19 @@ describe('convertLcovToCoveralls', () => {
     });
   });
 
+  it('should allow specifying the project root', done => {
+    delete process.env.TRAVIS;
+    const lcovpath = path.join(__dirname, './fixtures/onefile.lcov');
+    const input = fs.readFileSync(lcovpath, 'utf8');
+    const libpath = 'test/fixtures/lib';
+    convertLcovToCoveralls(input, { filepath: libpath, project_root_path: path.join(__dirname, '..') }, (err, output) => {
+      should.not.exist(err);
+      output.source_files[0].name.should.equal('test/fixtures/lib/index.js');
+      output.source_files[0].source.split('\n').length.should.equal(173);
+      done();
+    });
+  });
+
   it('should convert absolute input paths to relative', done => {
     delete process.env.TRAVIS;
     const lcovpath = path.join(__dirname, './fixtures/istanbul.lcov');
diff --git a/test/getOptions.js b/test/getOptions.js
index 5bf0312f..41001d8e 100644
--- a/test/getOptions.js
+++ b/test/getOptions.js
@@ -69,6 +69,9 @@ describe('getBaseOptions', () => {
   it('should set service_name and service_job_id if it\'s running on Azure Pipelines', done => {
     testAzurePipelines(getBaseOptions, done);
   });
+  it('should set service_name and service_job_id if it\'s running on AWS CodeBuild', done => {
+    testAwsCodeBuild(getBaseOptions, done);
+  });
 });
 
 describe('getOptions', () => {
@@ -179,6 +182,9 @@ describe('getOptions', () => {
   it('should set service_name and service_job_id if it\'s running via Azure Pipelines', done => {
     testAzurePipelines(getOptions, done);
   });
+  it('should set service_name and service_job_id if it\'s running via AWS CodeBuild', done => {
+    testAwsCodeBuild(getOptions, done);
+  });
   it('should set service_name and service_job_id if it\'s running via CodeFresh', done => {
     testCodefresh(getOptions, done);
   });
@@ -713,6 +719,36 @@ const testAzurePipelines = (sut, done) => {
   });
 };
 
+const testAwsCodeBuild = (sut, done) => {
+  process.env.CODEBUILD_BUILD_ARN = 'arn:build:1';
+  process.env.CODEBUILD_BUILD_ID = '1234';
+  process.env.CODEBUILD_RESOLVED_SOURCE_VERSION = 'e3e3e3e3e3e3e3e3e';
+  process.env.CODEBUILD_WEBHOOK_HEAD_REF = 'refs/heads/hotfix';
+  process.env.CODEBUILD_WEBHOOK_TRIGGER = 'pr/123';
+
+  const git = {
+    head: {
+      id: 'e3e3e3e3e3e3e3e3e',
+      author_name: 'Unknown Author',
+      author_email: '',
+      committer_name: 'Unknown Committer',
+      committer_email: '',
+      message: 'Unknown Commit Message'
+    },
+    branch: 'hotfix',
+    remotes: []
+  };
+
+  sut((err, options) => {
+    should.not.exist(err);
+    options.service_name.should.equal('AWS CodeBuild');
+    options.service_job_id.should.equal('1234');
+    options.service_pull_request.should.equal('123');
+    options.git.should.eql(git);
+    done();
+  });
+};
+
 const testCodefresh = (sut, done) => {
   process.env.CF_BRANCH = 'hotfix';
   process.env.CF_REVISION = 'e3e3e3e3e3e3e3e3e';