diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6750457..e6bd2dd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,9 +12,12 @@ jobs:
     runs-on: ubuntu-latest
     name: Ruby ${{ matrix.ruby }}
     strategy:
+      fail-fast: false
       matrix:
         ruby:
           - '3.3'
+          - '3.4'
+          - '4.0'
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.ruby-version b/.ruby-version
index a0891f5..43beb40 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.4
+4.0.7
diff --git a/Gemfile.lock b/Gemfile.lock
index 51bc284..1d4649e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,11 +39,14 @@ GEM
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
     logger (1.6.1)
-    minitest (5.25.2)
+    minitest (6.0.6)
+      drb (~> 2.0)
+      prism (~> 1.5)
     nio4r (2.7.4)
+    prism (1.9.0)
     puma (6.6.0)
       nio4r (~> 2.0)
-    rack (3.1.8)
+    rack (3.2.7)
     rackup (2.2.1)
       rack (>= 3)
     roda (3.91.0)
@@ -62,7 +65,7 @@ GEM
       rspec-support (~> 3.13.0)
     rspec-support (3.13.1)
     securerandom (0.3.2)
-    sqlite3 (2.3.0-x86_64-linux-gnu)
+    sqlite3 (2.9.6-x86_64-linux-gnu)
     tilt (2.6.0)
     timeout (0.4.2)
     tzinfo (2.0.6)