diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8f9d918..742b598 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,7 +20,7 @@ jobs:
       - name: Install dart
         uses: dart-lang/setup-dart@v1
       - name: Install melos
-        run: dart pub global activate melos
+        run: dart pub global activate melos 2.9.0
       - name: Initialize melos
         run: melos bs
       - name: Format and analyze
@@ -52,9 +52,9 @@ jobs:
       - name: Install dart
         uses: dart-lang/setup-dart@v1
       - name: Install melos
-        run: dart pub global activate melos
+        run: dart pub global activate melos 2.9.0
       - name: Install coverage
-        run: dart pub global activate coverage
+        run: dart pub global activate coverage 1.6.3
       - name: Install coverde
         run: dart pub global activate --source path .
       - name: Initialize melos
@@ -95,9 +95,9 @@ jobs:
       - name: Install dart
         uses: dart-lang/setup-dart@v1
       - name: Install melos
-        run: dart pub global activate melos
+        run: dart pub global activate melos 2.9.0
       - name: Install pana
-        run: dart pub global activate pana
+        run: dart pub global activate pana 0.21.35
       - name: Initialize melos
         run: melos bs
       - name: Verify pub score (10pts of tolerance)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4e84ef..39236e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [Unreleased]
+
+- **FEAT (BREAKING)**: require Dart 3.
+
 ## 0.1.0+1
 
 - **FIX**: use proper version for update check.
diff --git a/analysis_options.yaml b/analysis_options.yaml
index 734dc7a..fa88f6e 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,4 +1,4 @@
-include: package:very_good_analysis/analysis_options.2.4.0.yaml
+include: package:very_good_analysis/analysis_options.2.0.0.yaml
 
 analyzer:
   exclude:
diff --git a/melos.yaml b/melos.yaml
index 3b5c24c..344802f 100644
--- a/melos.yaml
+++ b/melos.yaml
@@ -48,7 +48,7 @@ scripts:
 
   t:
     description: Run tests and generate coverage tracefile for a selected package in random order.
-    run: melos exec -c 1 -- "dart test -x ci-only --coverage=coverage -r expanded --test-randomize-ordering-seed random --color && format_coverage --lcov --in=coverage --out=coverage/lcov.info --packages=.packages --report-on=lib"
+    run: melos exec -c 1 -- "dart test -x ci-only --coverage=coverage -r expanded --test-randomize-ordering-seed random --color && dart pub global run coverage:format_coverage --lcov --in=coverage --out=coverage/lcov.info --packages=.dart_tool/package_config.json --report-on=lib"
     select-package:
       dir-exists: test
   T:
@@ -56,7 +56,7 @@ scripts:
     run: melos run t --no-select
   T:ci:
     description: Run tests and generate coverage tracefiles for all packages in random order.
-    run: melos exec --fail-fast --dir-exists=test -- "dart test -x ci-only --coverage=coverage -r expanded --test-randomize-ordering-seed random && format_coverage --lcov --in=coverage --out=coverage/lcov.info --packages=.packages --report-on=lib"
+    run: melos exec --fail-fast --dir-exists=test -- "dart test -x ci-only --coverage=coverage -r expanded --test-randomize-ordering-seed random && dart pub global run coverage:format_coverage --lcov --in=coverage --out=coverage/lcov.info --packages=.dart_tool/package_config.json --report-on=lib"
 
   MC:
     description: Merge all packages coverage tracefiles ignoring data related to generated files.
diff --git a/pubspec.yaml b/pubspec.yaml
index 697004a..4832fa9 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,7 +6,7 @@ repository: https://github.com/mrverdant13/coverde
 issue_tracker: https://github.com/mrverdant13/coverde/issues
 
 environment:
-  sdk: ">=2.16.1 <3.0.0"
+  sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
   args: ^2.3.0
diff --git a/test/src/commands/report/report_test.dart b/test/src/commands/report/report_test.dart
index 0cbf055..0a92f0e 100644
--- a/test/src/commands/report/report_test.dart
+++ b/test/src/commands/report/report_test.dart
@@ -64,12 +64,10 @@ extension _FixturedString on String {
 
 class MockProcessManager extends Mock implements ProcessManager {}
 
-class FakeProcessResult extends Mock implements ProcessResult {}
-
 void main() {
   test(
     '''
-    
+
 A trace file report generator command should be instantiable
 ''',
     () {
@@ -136,7 +134,7 @@ AND an existing tracefile <${proj.name}>
 WHEN the command is invoqued
 THEN a coverage report should be launched
 ├─ BY generating an HTML report
-├─ AND launching it in a browser 
+├─ AND launching it in a browser
 ''',
             () async {
               // ARRANGE
@@ -154,7 +152,7 @@ THEN a coverage report should be launched
                 ),
               ).thenAnswer(
                 (_) async => Future.value(
-                  FakeProcessResult(),
+                  ProcessResult(0, 0, '', ''),
                 ),
               );