diff --git a/lib/ruby_lsp/setup_bundler.rb b/lib/ruby_lsp/setup_bundler.rb
index 846341ab8..a42c3e095 100644
--- a/lib/ruby_lsp/setup_bundler.rb
+++ b/lib/ruby_lsp/setup_bundler.rb
@@ -34,6 +34,7 @@ def stdout
     # Gems that should be kept up to date in the composed bundle. When updating, any of these gems that are not
     # already in the user's Gemfile will be updated together.
     GEMS_TO_UPDATE = ["ruby-lsp", "debug", "prism", "rbs"].freeze #: Array[String]
+    RUBY_LSP_MIN_VERSION = "0.18.0" #: String
 
     #: (String project_path, **untyped options) -> void
     def initialize(project_path, **options)
@@ -170,9 +171,8 @@ def write_custom_gemfile
       end
 
       unless @dependencies["ruby-lsp"]
-        ruby_lsp_entry = +'gem "ruby-lsp"'
-        ruby_lsp_entry << ", \">= 0.a\"" if @beta
-        ruby_lsp_entry << ", require: false, group: :development"
+        version = @beta ? "0.a" : RUBY_LSP_MIN_VERSION
+        ruby_lsp_entry = +"gem \"ruby-lsp\", \">= #{version}\", require: false, group: :development"
         ruby_lsp_entry << ", github: \"Shopify/ruby-lsp\", branch: \"#{@branch}\"" if @branch
         parts << ruby_lsp_entry
       end