diff --git a/test/irb/test_context.rb b/test/irb/test_context.rb
index ce57df6cdb19fe..f30ff36d4b5883 100644
--- a/test/irb/test_context.rb
+++ b/test/irb/test_context.rb
@@ -653,6 +653,7 @@ def test_lineno
     end
 
     def test_build_completor
+      pend 'set ENV["WITH_TYPE_COMPLETION_TEST"] to run this test' unless ENV['WITH_TYPE_COMPLETION_TEST']
       verbose, $VERBOSE = $VERBOSE, nil
       original_completor = IRB.conf[:COMPLETOR]
       IRB.conf[:COMPLETOR] = :regexp
diff --git a/test/irb/type_completion/test_scope.rb b/test/irb/type_completion/test_scope.rb
index d7f9540b067b0c..4eb0194785c2c4 100644
--- a/test/irb/type_completion/test_scope.rb
+++ b/test/irb/type_completion/test_scope.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+return unless ENV['WITH_TYPE_COMPLETION_TEST']
+
 return unless RUBY_VERSION >= '3.0.0'
 return if RUBY_ENGINE == 'truffleruby' # needs endless method definition
 
diff --git a/test/irb/type_completion/test_type_analyze.rb b/test/irb/type_completion/test_type_analyze.rb
index c417a8ad120719..1c1ea94c292f51 100644
--- a/test/irb/type_completion/test_type_analyze.rb
+++ b/test/irb/type_completion/test_type_analyze.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+return unless ENV['WITH_TYPE_COMPLETION_TEST']
+
 # Run test only when Ruby >= 3.0 and %w[prism rbs] are available
 return unless RUBY_VERSION >= '3.0.0'
 return if RUBY_ENGINE == 'truffleruby' # needs endless method definition
diff --git a/test/irb/type_completion/test_type_completor.rb b/test/irb/type_completion/test_type_completor.rb
index eed400b3e2d6f6..7ae1ada7924df3 100644
--- a/test/irb/type_completion/test_type_completor.rb
+++ b/test/irb/type_completion/test_type_completor.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+return unless ENV['WITH_TYPE_COMPLETION_TEST']
+
 # Run test only when Ruby >= 3.0 and %w[prism rbs] are available
 return unless RUBY_VERSION >= '3.0.0'
 return if RUBY_ENGINE == 'truffleruby' # needs endless method definition
diff --git a/test/irb/type_completion/test_types.rb b/test/irb/type_completion/test_types.rb
index 7698bd2fc07492..93c58be17acdf5 100644
--- a/test/irb/type_completion/test_types.rb
+++ b/test/irb/type_completion/test_types.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+return unless ENV['WITH_TYPE_COMPLETION_TEST']
+
 return unless RUBY_VERSION >= '3.0.0'
 return if RUBY_ENGINE == 'truffleruby' # needs endless method definition