diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index 7f501d30..3c3bf500 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0']
+        ruby-version: ['3.2', '3.3', '3.4']
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
diff --git a/.gitignore b/.gitignore
index 3e3704e2..b520939a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 coverage
 Gemfile.lock
+.bundle/
+bin/htmldiff
+bin/ldiff
+bin/rspec
diff --git a/.ruby-version b/.ruby-version
index 4d9d11cf..2aa51319 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.4.2
+3.4.7
diff --git a/.tool-versions b/.tool-versions
index ae5ecdb2..3f03c7a7 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-ruby 3.4.2
+ruby 3.4.7
diff --git a/Gemfile b/Gemfile
index ab3ae0ae..a5b74edb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
-gem 'rake'
-gem 'rspec'
+gem 'rake', '~> 13.3'
+gem 'rspec', '~> 3.13'