diff --git a/.github/workflows/test-package.yml b/.github/workflows/test-package.yml
index f1bac41..c744a64 100644
--- a/.github/workflows/test-package.yml
+++ b/.github/workflows/test-package.yml
@@ -47,7 +47,7 @@ jobs:
       matrix:
         # Add macos-latest and/or windows-latest if relevant for this package.
         os: [ubuntu-latest]
-        sdk: [3.0.0, dev]
+        sdk: [3.1, dev]
     steps:
       - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
       - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 657329c..d25ef1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## 1.2.2-wip
 
-* Require Dart 3.0
+* Require Dart 3.1
 
 ## 1.2.1
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 76eb5be..e4c998d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,10 +4,10 @@ description: Useful Unicode glyphs and ASCII substitutes.
 repository: https://github.com/dart-lang/term_glyph
 
 environment:
-  sdk: ^3.0.0
+  sdk: ^3.1.0
 
 dev_dependencies:
-  csv: ^5.0.0
-  dart_flutter_team_lints: ^2.0.0
+  csv: ^6.0.0
+  dart_flutter_team_lints: ^3.0.0
   dart_style: ^2.0.0
-  test: ^1.16.0
+  test: ^1.16.6