diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 903adc8a..5cc415ca 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.2.2"
+          ruby-version: "3.3.0"
           bundler-cache: true
       - run: bundle exec rails db:schema:load
       - run: bundle exec rails tailwindcss:build
diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 5ae68b52..e489e141 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.2.2"
+          ruby-version: "3.3.0"
           bundler-cache: true
       - run: bundle exec rbs collection install
       - run: bundle exec steep validate
diff --git a/.ruby-version b/.ruby-version
index 9e79f6c4..03463f3c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-ruby-3.2.2
+ruby-3.3.0
diff --git a/Gemfile b/Gemfile
index 93003c06..31f498ea 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "3.2.2"
+ruby "3.3.0"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.0"
@@ -70,7 +70,7 @@ gem "aws-sdk-s3", require: false
 
 gem "kaminari"
 
-gem "commonmarker", "1.0.0.pre11"
+gem "commonmarker", "1.0.3"
 gem "active_decorator"
 
 gem "web-push"
diff --git a/Gemfile.lock b/Gemfile.lock
index a537a8d2..b3999a6d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -92,9 +92,8 @@ GEM
     bootsnap (1.15.0)
       msgpack (~> 1.2)
     builder (3.2.4)
-    commonmarker (1.0.0.pre11-arm64-darwin)
-    commonmarker (1.0.0.pre11-x86_64-darwin)
-    commonmarker (1.0.0.pre11-x86_64-linux)
+    commonmarker (1.0.3)
+      rb_sys (~> 0.9)
     concurrent-ruby (1.2.2)
     connection_pool (2.4.1)
     crass (1.0.6)
@@ -267,6 +266,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
+    rb_sys (0.9.85)
     rbs (3.2.2)
     rbs_rails (0.12.0)
       parser
@@ -433,7 +433,7 @@ DEPENDENCIES
   amazing_print
   aws-sdk-s3
   bootsnap
-  commonmarker (= 1.0.0.pre11)
+  commonmarker (= 1.0.3)
   debug
   factory_bot_rails (~> 6.2.0)
   faraday
@@ -473,7 +473,7 @@ DEPENDENCIES
   woothee
 
 RUBY VERSION
-   ruby 3.2.2p53
+   ruby 3.3.0p0
 
 BUNDLED WITH
    2.4.19