diff --git a/tests/docker/Dockerfile b/tests/docker/Dockerfile
index e7c27d7e..ddb7b3b6 100644
--- a/tests/docker/Dockerfile
+++ b/tests/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.6
+FROM ruby:3.0
 
 COPY Gemfile* ./
 RUN gem install bundler && bundle install --jobs=3 --retry=3
diff --git a/tests/docker/Gemfile.lock b/tests/docker/Gemfile.lock
index 1f4debeb..845079ab 100644
--- a/tests/docker/Gemfile.lock
+++ b/tests/docker/Gemfile.lock
@@ -10,7 +10,12 @@ GEM
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2021.1115)
+    mini_portile2 (2.8.1)
     netrc (0.11.0)
+    nokogiri (1.14.1)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    racc (1.6.2)
     rest-client (2.1.0)
       http-accept (>= 1.7.0, < 2.0)
       http-cookie (>= 1.0.2, < 2.0)
@@ -37,8 +42,9 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  nokogiri
   rest-client
   rspec
 
 BUNDLED WITH
-   1.17.2
+   2.4.6