diff --git a/lib/mini_racer.rb b/lib/mini_racer.rb
index 248181e..400012b 100644
--- a/lib/mini_racer.rb
+++ b/lib/mini_racer.rb
@@ -360,7 +360,7 @@ def timeout(&blk)
       t = Thread.new do
         begin
           while true do
-            result = IO.select([rp],[],[],0.1) # seconds # TODO: Adjust this interval depending on the remaining wall/cpu clock; required for tests
+            result = IO.select([rp],[],[],0.05) # seconds # TODO: Adjust this interval depending on the remaining wall/cpu clock; required for tests
             break if result # operation completed
             current_monotonic_time = Process.clock_gettime Process::CLOCK_MONOTONIC, :millisecond
             if thread_clock then
diff --git a/test/mini_racer_test.rb b/test/mini_racer_test.rb
index f7d98a3..fa07b5e 100644
--- a/test/mini_racer_test.rb
+++ b/test/mini_racer_test.rb
@@ -119,7 +119,7 @@ def test_it_can_time_out_js_eval
   def test_it_can_hit_cputime_limit_during_serialization
     context = MiniRacer::Context.new(timeout: 30,cputime_limit: 20)
 
-    Timeout::timeout(0.025) do
+    Timeout::timeout(0.250) do
       assert_raises(MiniRacer::ScriptTerminatedError) do
         context.eval 'var a = {get a(){ while(true); }}; a'
       end
@@ -129,7 +129,7 @@ def test_it_can_hit_cputime_limit_during_serialization
   def test_it_can_limit_cputime
     context = MiniRacer::Context.new(timeout: 20, cputime_limit: 2)
     # our test should raise after the cputime_limit, but before our timeout
-    Timeout::timeout(0.010) do
+    Timeout::timeout(0.100) do
       assert_raises do
         context.eval('while(true){}')
       end