diff --git a/chisel/playground/src/pipeline/writeback/CommitBuffer.scala b/chisel/playground/src/pipeline/writeback/CommitBuffer.scala
index 3b7708e..a848c93 100644
--- a/chisel/playground/src/pipeline/writeback/CommitBuffer.scala
+++ b/chisel/playground/src/pipeline/writeback/CommitBuffer.scala
@@ -5,7 +5,7 @@ import chisel3.util._
 import cpu.defines.DEBUG
 
 class CommitBuffer(
-  depth: Int = 32)
+  depth: Int = 128)
     extends Module {
   val io = IO(new Bundle {
     val flush = Input(Bool())