diff --git a/.drone.yml b/.drone.yml
index 34389c8..795036c 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -3,7 +3,7 @@ kind: pipeline
 
 steps:
 - name: install
-  image: ruby:3.2.0
+  image: ruby:3.3.1
   volumes:
   - name: bundle
     path: /usr/local/bundle
@@ -11,7 +11,7 @@ steps:
   - bin/bundle install --jobs=3 --retry=3
 
 - name: autoload
-  image: ruby:3.2.0
+  image: ruby:3.3.1
   volumes:
   - name: bundle
     path: /usr/local/bundle
@@ -21,7 +21,7 @@ steps:
   - install
 
 - name: lint
-  image: ruby:3.2.0
+  image: ruby:3.3.1
   volumes:
   - name: bundle
     path: /usr/local/bundle
@@ -31,7 +31,7 @@ steps:
   - install
 
 - name: test
-  image: ruby:3.2.0
+  image: ruby:3.3.1
   volumes:
   - name: bundle
     path: /usr/local/bundle
diff --git a/.ruby-version b/.ruby-version
index 15a2799..bea438e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.0
+3.3.1
diff --git a/Gemfile.lock b/Gemfile.lock
index e5bb4a0..e7af628 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -303,4 +303,4 @@ DEPENDENCIES
   webdrivers
 
 BUNDLED WITH
-   2.4.7
+   2.5.9