diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bd4f833..eaceacb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,10 +11,10 @@ jobs:
     strategy:
       matrix:
         os: [windows-2022, windows-2025, ubuntu-22.04, ubuntu-24.04]
-        ruby-version: [2.6, 2.7, 3.0]
+        ruby-version: [2.6, 2.7, 3.0, 4.0]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
diff --git a/ruby-bandwidth-iris.gemspec b/ruby-bandwidth-iris.gemspec
index 5a281d8..851c39f 100644
--- a/ruby-bandwidth-iris.gemspec
+++ b/ruby-bandwidth-iris.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
   spec.add_dependency "builder"
   spec.add_dependency "faraday"
-  spec.add_dependency "faraday-follow_redirects", '~> 0.3.0'
+  spec.add_dependency "faraday-follow_redirects", '~> 0.5.0'
   spec.add_dependency "activesupport",">= 4.2.7"
   spec.add_dependency "rexml"