diff --git a/changelog/change_relax_regexp_parser_requirement.md b/changelog/change_relax_regexp_parser_requirement.md
new file mode 100644
index 00000000000..89e6858fd0c
--- /dev/null
+++ b/changelog/change_relax_regexp_parser_requirement.md
@@ -0,0 +1 @@
+* [#9102](https://github.com/rubocop-hq/rubocop/pull/9102): Relax regexp_parser requirement. ([@marcandre][])
diff --git a/rubocop.gemspec b/rubocop.gemspec
index e0c220c6e68..047e8ebdba1 100644
--- a/rubocop.gemspec
+++ b/rubocop.gemspec
@@ -33,7 +33,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency('parallel', '~> 1.10')
   s.add_runtime_dependency('parser', '>= 2.7.1.5')
   s.add_runtime_dependency('rainbow', '>= 2.2.2', '< 4.0')
-  s.add_runtime_dependency('regexp_parser', '>= 2.0')
+  s.add_runtime_dependency('regexp_parser', '>= 1.8', '< 3.0')
   s.add_runtime_dependency('rexml')
   s.add_runtime_dependency('rubocop-ast', '>= 1.2.0')
   s.add_runtime_dependency('ruby-progressbar', '~> 1.7')