diff --git a/src/Benchmarks/Program.cs b/src/Benchmarks/Program.cs
index a85f012f2..e2fd9d803 100644
--- a/src/Benchmarks/Program.cs
+++ b/src/Benchmarks/Program.cs
@@ -62,6 +62,8 @@ public static void Main(string[] args)
                             Console.WriteLine();
                             Console.Write("Forcing GC...");
                             GC.Collect();
+                            GC.WaitForPendingFinalizers();
+                            GC.Collect();
                             Console.WriteLine(" done!");
                         }
                         else