diff --git a/test/lib/test/unit/assertions.rb b/test/lib/test/unit/assertions.rb
index 51f89d5ae0..9fbf7cbf95 100644
--- a/test/lib/test/unit/assertions.rb
+++ b/test/lib/test/unit/assertions.rb
@@ -756,7 +756,7 @@ eom
         skip
       end
 
-      def assert_cpu_usage_low(msg = nil, pct: 0.01)
+      def assert_cpu_usage_low(msg = nil, pct: 0.05)
         require 'benchmark'
 
         tms = Benchmark.measure(msg || '') { yield }