2 files changed, 2 insertions, 0 deletions
diff --git a/test/ruby/test_notimp.rb b/test/ruby/test_notimp.rb
index 9e80987a87..d16ad5155b 100644
--- a/test/ruby/test_notimp.rb
+++ b/test/ruby/test_notimp.rb
@@ -21,6 +21,7 @@ class TestNotImplement < Test::Unit::TestCase
   end
 
   def test_call_fork
+    GC.start
     pid = nil
     begin
       Timeout.timeout(5) {
diff --git a/test/ruby/test_rand.rb b/test/ruby/test_rand.rb
index 98615f8d42..0517dd51c3 100644
--- a/test/ruby/test_rand.rb
+++ b/test/ruby/test_rand.rb
@@ -437,6 +437,7 @@ END
   end
 
   def test_rand_reseed_on_fork
+    GC.start
     bug5661 = '[ruby-core:41209]'
 
     assert_fork_status(1, bug5661) {Random.rand(4)}