diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index 99eaaa2..420333c 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7.2
+          ruby-version: 3.0.0
       - name: Install gems
         run: bundle install --jobs 4 --retry 3
       - name: Run RuboCop
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ea88908..d22ae3a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,8 +17,14 @@ jobs:
           - 5-2-stable
           - v5.2.4
         ruby:
+          - 3.0.0
           - 2.7.2
           - 2.6.6
+        exclude:
+          - rails:  v5.2.4
+            ruby:   3.0.0
+          - rails:  5-2-stable
+            ruby:   3.0.0
     env:
       DB: sqlite3
       RAILS: ${{ matrix.rails }}
@@ -45,8 +51,14 @@ jobs:
           - 5-2-stable
           - v5.2.4
         ruby:
+          - 3.0.0
           - 2.7.2
           - 2.6.6
+        exclude:
+          - rails:  v5.2.4
+            ruby:   3.0.0
+          - rails:  5-2-stable
+            ruby:   3.0.0
     env:
       DB: mysql
       RAILS: ${{ matrix.rails }}
@@ -82,8 +94,14 @@ jobs:
           - 5-2-stable
           - v5.2.4
         ruby:
+          - 3.0.0
           - 2.7.2
           - 2.6.6
+        exclude:
+          - rails:  v5.2.4
+            ruby:   3.0.0
+          - rails:  5-2-stable
+            ruby:   3.0.0
     env:
       DB: postgres
       RAILS: ${{ matrix.rails }}