diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index 3bbfe8d..90ba2a5 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -36,7 +36,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        platform: [ubuntu-latest, macos-latest, windows-latest]
+        platform: [ubuntu-latest, macos-11, windows-latest]
     runs-on: ${{ matrix.platform }}
 
     steps:
diff --git a/test/credentials_test.dart b/test/credentials_test.dart
index 64bfd92..c514913 100644
--- a/test/credentials_test.dart
+++ b/test/credentials_test.dart
@@ -1,5 +1,3 @@
-@Retry(10)
-
 import 'dart:io';
 
 import 'package:libgit2dart/libgit2dart.dart';
diff --git a/test/remote_test.dart b/test/remote_test.dart
index b538cde..494f0a1 100644
--- a/test/remote_test.dart
+++ b/test/remote_test.dart
@@ -1,5 +1,3 @@
-@Retry(10)
-
 import 'dart:io';
 
 import 'package:libgit2dart/libgit2dart.dart';
diff --git a/test/submodule_test.dart b/test/submodule_test.dart
index 083b03d..ab9ea40 100644
--- a/test/submodule_test.dart
+++ b/test/submodule_test.dart
@@ -1,5 +1,3 @@
-@Retry(10)
-
 import 'dart:ffi';
 import 'dart:io';