diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a26232..0466020 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.6
+          ruby-version: 3.3
           bundler-cache: true
       - name: rubocop with skip install and using bundler
         uses: ./
diff --git a/test/using_bundler/Gemfile.lock b/test/using_bundler/Gemfile.lock
index 1692780..802cd8b 100644
--- a/test/using_bundler/Gemfile.lock
+++ b/test/using_bundler/Gemfile.lock
@@ -2,27 +2,33 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
-    parallel (1.20.1)
-    parser (3.0.2.0)
+    json (2.7.2)
+    language_server-protocol (3.17.0.3)
+    parallel (1.25.1)
+    parser (3.3.4.0)
       ast (~> 2.4.1)
-    rainbow (3.0.0)
-    regexp_parser (2.1.1)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
-    rubocop (1.18.1)
+      racc
+    racc (1.8.0)
+    rainbow (3.1.1)
+    regexp_parser (2.9.2)
+    rexml (3.3.2)
+      strscan
+    rubocop (1.65.0)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.7.0, < 2.0)
+      regexp_parser (>= 2.4, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.9.0)
-      parser (>= 3.0.1.1)
-    ruby-progressbar (1.11.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.31.3)
+      parser (>= 3.3.1.0)
+    ruby-progressbar (1.13.0)
     strscan (3.1.0)
-    unicode-display_width (2.0.0)
+    unicode-display_width (2.5.0)
 
 PLATFORMS
   x86_64-linux
@@ -31,4 +37,4 @@ DEPENDENCIES
   rubocop
 
 BUNDLED WITH
-   2.2.25
+   2.5.11