diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f0aa029..8d4551e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,8 +12,7 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - 2.7.3
-          - 3.1.3
+          - 3.4.3
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 751553b..12f87a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+- Removed support for ruby 2.7.x.
+- Upgraded tests to run with ruby 3.4.3.
+- Updated dependencies.
+
 ## 0.8.1
 
 ### Fixed
diff --git a/Gemfile.lock b/Gemfile.lock
index 3320ff3..0867133 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,25 +8,25 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    diff-lcs (1.5.0)
-    nokogiri (1.15.4-x86_64-linux)
+    diff-lcs (1.6.1)
+    nokogiri (1.18.8-x86_64-linux-gnu)
       racc (~> 1.4)
-    racc (1.7.1)
-    rake (13.0.6)
-    redcarpet (3.6.0)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.1)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.2)
+    racc (1.8.1)
+    rake (13.2.1)
+    redcarpet (3.6.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.3)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.3)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
 
 PLATFORMS
   x86_64-linux
@@ -39,4 +39,4 @@ DEPENDENCIES
   rspec
 
 BUNDLED WITH
-   2.3.6
+   2.6.7