diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index f9da2ff..ffa0927 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -34,7 +34,7 @@ jobs:
       timeout-minutes: 5
       run: bundle exec bake test
     
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: coverage-${{matrix.os}}-${{matrix.ruby}}
         path: .covered.db
@@ -50,7 +50,7 @@ jobs:
         ruby-version: "3.3"
         bundler-cache: true
     
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
     
     - name: Validate coverage
       timeout-minutes: 5
diff --git a/bake.rb b/bake.rb
index 52b35d0..6971885 100644
--- a/bake.rb
+++ b/bake.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2024, by Samuel Williams.
+# Copyright, 2020-2024, by Samuel Williams.
 
 # Update the project documentation with the new version number.
 #
diff --git a/lib/async/http/protocol/http1/client.rb b/lib/async/http/protocol/http1/client.rb
index 2ee4d26..c7fa99b 100644
--- a/lib/async/http/protocol/http1/client.rb
+++ b/lib/async/http/protocol/http1/client.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2018-2023, by Samuel Williams.
+# Copyright, 2018-2024, by Samuel Williams.
 
 require_relative 'connection'
 
diff --git a/lib/async/http/protocol/http2/request.rb b/lib/async/http/protocol/http2/request.rb
index 60e04d1..406ca2e 100644
--- a/lib/async/http/protocol/http2/request.rb
+++ b/lib/async/http/protocol/http2/request.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2018-2023, by Samuel Williams.
+# Copyright, 2018-2024, by Samuel Williams.
 
 require_relative '../request'
 require_relative 'stream'
diff --git a/lib/async/http/protocol/http2/response.rb b/lib/async/http/protocol/http2/response.rb
index 8c934a9..5d79713 100644
--- a/lib/async/http/protocol/http2/response.rb
+++ b/lib/async/http/protocol/http2/response.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2018-2023, by Samuel Williams.
+# Copyright, 2018-2024, by Samuel Williams.
 
 require_relative '../response'
 require_relative 'stream'
diff --git a/lib/async/http/protocol/request.rb b/lib/async/http/protocol/request.rb
index 41c7f29..ded0d2c 100644
--- a/lib/async/http/protocol/request.rb
+++ b/lib/async/http/protocol/request.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2017-2023, by Samuel Williams.
+# Copyright, 2017-2024, by Samuel Williams.
 
 require 'protocol/http/request'
 require 'protocol/http/headers'