diff --git a/test/rubygems/test_gem_ext_cmake_builder.rb b/test/rubygems/test_gem_ext_cmake_builder.rb
index 0eb1a4c0f5..05673e1b6d 100644
--- a/test/rubygems/test_gem_ext_cmake_builder.rb
+++ b/test/rubygems/test_gem_ext_cmake_builder.rb
@@ -10,8 +10,6 @@ class TestGemExtCmakeBuilder < Gem::TestCase
     # Details: https://github.com/rubygems/rubygems/issues/1270#issuecomment-177368340
     skip "CmakeBuilder doesn't work on Windows." if Gem.win_platform?
 
-    skip "CmakeBuilder doesn't work on JRuby." if Gem.java_platform? && ENV["CI"]
-
     system('cmake', out: IO::NULL, err: [:child, :out])
 
     skip 'cmake not present' unless $?.success?
diff --git a/test/rubygems/test_gem_ext_configure_builder.rb b/test/rubygems/test_gem_ext_configure_builder.rb
index 6e51f1880d..ac8a861e17 100644
--- a/test/rubygems/test_gem_ext_configure_builder.rb
+++ b/test/rubygems/test_gem_ext_configure_builder.rb
@@ -18,10 +18,6 @@ class TestGemExtConfigureBuilder < Gem::TestCase
   end
 
   def test_self_build
-    if java_platform? && ENV["CI"]
-      skip("failing on jruby")
-    end
-
     skip("test_self_build skipped on MS Windows (VC++)") if vc_windows?
 
     File.open File.join(@ext, './configure'), 'w' do |configure|
@@ -49,10 +45,6 @@ class TestGemExtConfigureBuilder < Gem::TestCase
   end
 
   def test_self_build_fail
-    if java_platform? && ENV["CI"]
-      skip("failing on jruby")
-    end
-
     skip("test_self_build_fail skipped on MS Windows (VC++)") if vc_windows?
     output = []