diff --git a/capybara.gemspec b/capybara.gemspec
index d6e09df8..7ed517ad 100644
--- a/capybara.gemspec
+++ b/capybara.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency('nokogiri', ['~> 1.8'])
   s.add_runtime_dependency('rack', ['>= 1.6.0'])
   s.add_runtime_dependency('rack-test', ['>= 0.6.3'])
-  s.add_runtime_dependency('regexp_parser', ['~>1.2'])
+  s.add_runtime_dependency('regexp_parser', ['~>1.5'])
   s.add_runtime_dependency('xpath', ['~>3.2'])
 
   s.add_development_dependency('byebug') unless RUBY_PLATFORM == 'java'
diff --git a/lib/capybara/selector/regexp_disassembler.rb b/lib/capybara/selector/regexp_disassembler.rb
index 43e3b2f1..02fb3a08 100644
--- a/lib/capybara/selector/regexp_disassembler.rb
+++ b/lib/capybara/selector/regexp_disassembler.rb
@@ -166,11 +166,11 @@ module Capybara
         end
 
         def min_repeat
-          @exp.quantifier&.min || 1
+          @exp.repetitions.begin
         end
 
         def max_repeat
-          @exp.quantifier&.max || 1
+          @exp.repetitions.end
         end
 
         def fixed_repeat?