diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 00000000000..0d6774d5db1
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,8 @@
+{
+    "recommendations": [
+        "shopify.ruby-lsp",
+        "editorconfig.editorconfig",
+        "soutaro.rbs-syntax",
+        "soutaro.steep-vscode"
+    ]
+}
diff --git a/Appraisals b/Appraisals
index c0f94387fab..b7d018c8631 100644
--- a/Appraisals
+++ b/Appraisals
@@ -17,6 +17,9 @@ REMOVED_GEMS = {
     'rbs',
     'steep',
   ],
+  :dev => [
+    'ruby-lsp',
+  ],
 }
 
 def appraise(group, &block)
diff --git a/Gemfile b/Gemfile
index 58cd0c363ac..28ab18df764 100644
--- a/Gemfile
+++ b/Gemfile
@@ -84,6 +84,10 @@ group :check do
   end
 end
 
+group :dev do
+  gem 'ruby-lsp', require: false if RUBY_VERSION >= '3.0.0' && RUBY_PLATFORM != 'java'
+end
+
 # `1.17.0` provides broken RBS type definitions
 # https://github.com/ffi/ffi/blob/master/CHANGELOG.md#1170rc1--2024-04-08
 #