diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f133473..fd0688a 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
+    - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
       with:
         fetch-depth: 0 # fetch everything
     - name: Set up Ruby
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b01d45f..05a2ded 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -29,7 +29,7 @@ jobs:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
 
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
+    - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
     - name: Set up Ruby
       uses: ruby/setup-ruby@4c56a21280b36d862b5fc31348f463d60bdc55d5 # ruby/setup-ruby@v1 see https://github.com/ruby/setup-ruby/tree/v1
       with:
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 25a1138..f503c7c 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -4,7 +4,6 @@
 require 'canql'
 
 require 'minitest/autorun'
-require 'minitest/unit'
 
 # Override the default Date#to_s format to ensure the formmating is right
 Date::DATE_FORMATS[:default] = '%d.%m.%Y'