diff --git a/tests/full/Gemfile b/tests/full/Gemfile
index 245cb8a1..4ed99825 100644
--- a/tests/full/Gemfile
+++ b/tests/full/Gemfile
@@ -5,7 +5,7 @@ source 'https://rubygems.org'
 gem 'html-proofer'
 gem 'html-proofer-unrendered-markdown'
 gem 'jekyll', '~> 4.3', group: :jekyll_plugins
-gem 'open3', '~> 0.1.2'
+gem 'open3', '~> 0.2.1'
 gem 'rake'
 
 gem 'jekyll-material-icon-tag', '~> 1.1'
diff --git a/tests/full/Gemfile.lock b/tests/full/Gemfile.lock
index 8b9c1d1f..612a7793 100644
--- a/tests/full/Gemfile.lock
+++ b/tests/full/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
     nokogiri (1.15.4)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    open3 (0.1.2)
+    open3 (0.2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     pdf-reader (2.11.0)
@@ -168,7 +168,7 @@ DEPENDENCIES
   jekyll-material-icon-tag (~> 1.1)
   jemoji (~> 0.13.0)
   kramdown-plantuml (>= 1.1.12)
-  open3 (~> 0.1.2)
+  open3 (~> 0.2.1)
   rake
   swedbank-pay-design-guide-jekyll-theme (>= 1.12.4)