diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index 119546e2..bb1838d7 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     container:
-      image: dart:2.17
+      image: dart
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
diff --git a/.github/workflows/publish_demos.yml b/.github/workflows/publish_demos.yml
index 33f242d2..25a2bb12 100644
--- a/.github/workflows/publish_demos.yml
+++ b/.github/workflows/publish_demos.yml
@@ -7,7 +7,7 @@ jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
     container:
-      image:  google/dart:latest
+      image: dart
     steps:
       - name: Checkout 🛎️
         uses: actions/checkout@v2.3.1
diff --git a/.github/workflows/publish_release.yml b/.github/workflows/publish_release.yml
index ca9789ba..0287d22a 100644
--- a/.github/workflows/publish_release.yml
+++ b/.github/workflows/publish_release.yml
@@ -8,7 +8,8 @@ jobs:
   publish:
 
     runs-on: ubuntu-latest
-
+    container:
+      image: dart
     steps:
       - name: Checkout
         uses: actions/checkout@v1
diff --git a/.github/workflows/release_unreleased_prs.yml b/.github/workflows/release_unreleased_prs.yml
index a087b032..9b33737d 100644
--- a/.github/workflows/release_unreleased_prs.yml
+++ b/.github/workflows/release_unreleased_prs.yml
@@ -12,7 +12,7 @@ jobs:
   release:
     if: github.event.pull_request.merged == true || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
-    container: dart:2.17.7
+    container: dart
     permissions:
       contents: write
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6e1cb6e5..225f514f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        sdk: [2.14.4, 2.17.7, stable] # Test with at least the declared minimum Dart version
+        sdk: [2.17.7, stable] # Test with at least the declared minimum Dart version
     steps:
       - uses: actions/checkout@v2
       - uses: dart-lang/setup-dart@v1.3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fcbf764c..1e7a870d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,15 @@
+## 9.6.0
+
+* Update to allow different merge methods in pulls_service by @ricardoamador in https://github.com/SpinlockLabs/github.dart/pull/333
+
+
+**Full Changelog**: https://github.com/SpinlockLabs/github.dart/compare/9.5.1...9.6.0
+
 ## 9.5.1
 
+* Require Dart 2.17
 * Fix up unit tests & run them in CI by @robrbecker in https://github.com/SpinlockLabs/github.dart/pull/336
 
-
 **Full Changelog**: https://github.com/SpinlockLabs/github.dart/compare/9.5.0...9.5.1
 
 ## 9.5.0
diff --git a/lib/src/common/pulls_service.dart b/lib/src/common/pulls_service.dart
index 9c611cf9..f0ec3dcc 100644
--- a/lib/src/common/pulls_service.dart
+++ b/lib/src/common/pulls_service.dart
@@ -121,16 +121,27 @@ class PullRequestsService extends Service {
     RepositorySlug slug,
     int number, {
     String? message,
+    MergeMethod mergeMethod = MergeMethod.merge,
+    String? requestSha,
   }) {
     final json = <String, dynamic>{};
 
     if (message != null) {
       json['commit_message'] = message;
     }
+    if (requestSha != null) {
+      json['sha'] = requestSha;
+    }
+
+    json['merge_method'] = mergeMethod.name;
+
+    // Recommended Accept header when making a merge request.
+    Map<String, String>? headers = <String, String>{};
+    headers['Accept'] = 'application/vnd.github+json';
 
     return github
         .request('PUT', '/repos/${slug.fullName}/pulls/$number/merge',
-            body: GitHubJson.encode(json))
+            headers: headers, body: GitHubJson.encode(json))
         .then((response) {
       return PullRequestMerge.fromJson(
           jsonDecode(response.body) as Map<String, dynamic>);
@@ -184,3 +195,9 @@ class PullRequestsService extends Service {
     );
   }
 }
+
+enum MergeMethod {
+  merge,
+  squash,
+  rebase,
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index d7d20f57..76b54847 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,10 +1,10 @@
 name: github
-version: 9.5.1
+version: 9.6.0
 description: A high-level GitHub API Client Library that uses Github's v3 API
 homepage: https://github.com/SpinlockLabs/github.dart
 
 environment:
-  sdk: '>=2.14.0 <3.0.0'
+  sdk: '>=2.17.0 <3.0.0'
 
 dependencies:
   http: ^0.13.0
diff --git a/test/assets/responses/nocked_responses.dart b/test/assets/responses/nocked_responses.dart
index 6feb9465..3a1b9b5b 100644
--- a/test/assets/responses/nocked_responses.dart
+++ b/test/assets/responses/nocked_responses.dart
@@ -1472,3 +1472,9 @@ var searchResults = '''{
     }
   ]
 }''';
+
+var mergedPR1 = '''{
+  "sha": "someSHA",
+  "merged": true,
+  "message": "Pull Request successfully merged"
+}''';
diff --git a/test/git_test.dart b/test/git_test.dart
index 2eaff028..f769571b 100644
--- a/test/git_test.dart
+++ b/test/git_test.dart
@@ -188,4 +188,77 @@ void main() {
     expect(results.totalCount, 17);
     expect(results.items?.length, 17);
   });
+
+  group('Merge', () {
+    test('Merge() normal', () async {
+      nock(fakeApiUrl)
+          .put('/repos/o/n/pulls/1/merge', '{"merge_method":"merge"}')
+          .reply(201, nocked.mergedPR1);
+
+      var pullRequestMerge = await github.pullRequests.merge(repo, 1);
+
+      expect(pullRequestMerge.merged, true);
+      expect(pullRequestMerge.message, 'Pull Request successfully merged');
+      expect(pullRequestMerge.sha, someSha);
+    });
+
+    test('Merge() with squash', () async {
+      nock(fakeApiUrl)
+          .put('/repos/o/n/pulls/1/merge', '{"merge_method":"squash"}')
+          .reply(201, nocked.mergedPR1);
+
+      var pullRequestMerge = await github.pullRequests
+          .merge(repo, 1, mergeMethod: MergeMethod.squash);
+
+      expect(pullRequestMerge.merged, true);
+      expect(pullRequestMerge.message, 'Pull Request successfully merged');
+      expect(pullRequestMerge.sha, someSha);
+    });
+
+    test('Merge() with rebase', () async {
+      nock(fakeApiUrl)
+          .put('/repos/o/n/pulls/1/merge', '{"merge_method":"rebase"}')
+          .reply(201, nocked.mergedPR1);
+
+      var pullRequestMerge = await github.pullRequests
+          .merge(repo, 1, mergeMethod: MergeMethod.rebase);
+
+      expect(pullRequestMerge.merged, true);
+      expect(pullRequestMerge.message, 'Pull Request successfully merged');
+      expect(pullRequestMerge.sha, someSha);
+    });
+
+    test('Merge() with commitMessage', () async {
+      const commitMessage = 'Some message';
+      nock(fakeApiUrl)
+          .put('/repos/o/n/pulls/1/merge',
+              '{"commit_message":"$commitMessage","merge_method":"squash"}')
+          .reply(201, nocked.mergedPR1);
+
+      var pullRequestMerge = await github.pullRequests.merge(repo, 1,
+          message: commitMessage, mergeMethod: MergeMethod.squash);
+
+      expect(pullRequestMerge.merged, true);
+      expect(pullRequestMerge.message, 'Pull Request successfully merged');
+      expect(pullRequestMerge.sha, someSha);
+    });
+
+    test('Merge() with commitMessage, with sha', () async {
+      const commitMessage = 'Some message';
+      const commitSha = 'commitSha';
+      nock(fakeApiUrl)
+          .put('/repos/o/n/pulls/1/merge',
+              '{"commit_message":"$commitMessage","sha":"$commitSha","merge_method":"squash"}')
+          .reply(201, nocked.mergedPR1);
+
+      var pullRequestMerge = await github.pullRequests.merge(repo, 1,
+          message: commitMessage,
+          mergeMethod: MergeMethod.squash,
+          requestSha: commitSha);
+
+      expect(pullRequestMerge.merged, true);
+      expect(pullRequestMerge.message, 'Pull Request successfully merged');
+      expect(pullRequestMerge.sha, someSha);
+    });
+  });
 }