diff --git a/test/test_cli.rb b/test/test_cli.rb
index d49236246a..830929913e 100644
--- a/test/test_cli.rb
+++ b/test/test_cli.rb
@@ -66,6 +66,7 @@ def test_control_for_tcp
   end
 
   def test_control_for_ssl
+    skip_on :jruby # backported from https://github.com/puma/puma/blob/b0b17f6ffd6a3fc858202a2b0ac1385f45603b18/test/test_cli.rb#L67
     app_port = UniquePort.call
     control_port = UniquePort.call
     control_host = "127.0.0.1"
@@ -97,8 +98,8 @@ def test_control_for_ssl
     assert_match(expected_stats, Puma.stats)
 
   ensure
-    cli.launcher.stop
-    t.join
+    cli.launcher.stop if cli
+    t.join if t
   end
 
   def test_control_clustered
diff --git a/test/test_launcher.rb b/test/test_launcher.rb
index 9de31b9152..710bb04d4f 100644
--- a/test/test_launcher.rb
+++ b/test/test_launcher.rb
@@ -5,6 +5,7 @@
 class TestLauncher < Minitest::Test
   def test_dependencies_and_files_to_require_after_prune_is_correctly_built_for_no_extra_deps
     skip_on :no_bundler
+    skip_on :jruby, suffix: " - customizing puma.gemspec to disable the C native extension invalidates this test"
 
     deps, dirs = launcher.send(:dependencies_and_files_to_require_after_prune)
 
@@ -17,6 +18,7 @@ def test_dependencies_and_files_to_require_after_prune_is_correctly_built_for_no
   end
 
   def test_dependencies_and_files_to_require_after_prune_is_correctly_built_with_extra_deps
+    skip_on :jruby, suffix: " - customizing puma.gemspec to disable the C native extension invalidates this test"
     skip_on :no_bundler
     conf = Puma::Configuration.new do |c|
       c.extra_runtime_dependencies ['rdoc']
diff --git a/test/test_pumactl.rb b/test/test_pumactl.rb
index 20e56e0ebc..c17dd1e816 100644
--- a/test/test_pumactl.rb
+++ b/test/test_pumactl.rb
@@ -149,6 +149,7 @@ def test_control_url_and_status
   end
 
   def test_control_ssl
+    skip_on :jruby # ported from https://github.com/puma/puma/blob/4ef001000e71f987ccfacd28c3cbda614d3717ff/test/test_pumactl.rb#L144
     host = "127.0.0.1"
     port = find_open_port
     url = "ssl://#{host}:#{port}?#{ssl_query}"