diff --git a/.Changelog-dev.md b/.Changelog-dev.md
deleted file mode 100644
index 244dee2e..00000000
--- a/.Changelog-dev.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# Dev
-
-## Steps
-
-* `OpenROAD.CTS`
-  * Added flags `CTS_OBSTRUCTION_AWARE` and `CTS_BALANCE_LEVELS`
-  * Added `CTS_SINK_BUFFER_MAX_CAP_DERATE_PCT`
diff --git a/Changelog.md b/Changelog.md
index 5e494448..0095f786 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -14,6 +14,15 @@
 ## Documentation
 -->
 
+# Dev
+
+## Steps
+
+* `OpenROAD.CTS`
+  * Added flags `CTS_OBSTRUCTION_AWARE` and `CTS_BALANCE_LEVELS`
+  * Added `CTS_SINK_BUFFER_MAX_CAP_DERATE_PCT`
+  * Added `CTS_DELAY_BUFFER_DERATE_PCT`
+
 # 2.2.9
 
 ## Steps
diff --git a/openlane/scripts/openroad/cts.tcl b/openlane/scripts/openroad/cts.tcl
index 38226c23..81fcf05d 100755
--- a/openlane/scripts/openroad/cts.tcl
+++ b/openlane/scripts/openroad/cts.tcl
@@ -59,6 +59,9 @@ if { [info exists ::env(CTS_OBSTRUCTION_AWARE)] && $::env(CTS_OBSTRUCTION_AWARE)
 if { [info exists ::env(CTS_SINK_BUFFER_MAX_CAP_DERATE_PCT)] } {
     lappend arg_list -sink_buffer_max_cap_derate [expr $::env(CTS_SINK_BUFFER_MAX_CAP_DERATE_PCT) / 100.0]
 }
+if { [info exists ::env(CTS_DELAY_BUFFER_DERATE_PCT)] } {
+    lappend arg_list -delay_buffer_derate [expr $::env(CTS_DELAY_BUFFER_DERATE_PCT) / 100]
+}
 if { [info exists ::env(CTS_BALANCE_LEVELS)] && $::env(CTS_BALANCE_LEVELS) } {
     lappend arg_list -balance_levels
 }
diff --git a/openlane/steps/openroad.py b/openlane/steps/openroad.py
index b2fc7fea..d78a0483 100644
--- a/openlane/steps/openroad.py
+++ b/openlane/steps/openroad.py
@@ -2025,6 +2025,13 @@ class CTS(ResizerStep):
                 + "The value of 100 means no derating of max cap limit",
                 units="%",
             ),
+            Variable(
+                "CTS_DELAY_BUFFER_DERATE_PCT",
+                Optional[Decimal],
+                "This option balances latencies between macro cells and registers by inserting delay buffers"
+                + "The value of 100 means all needed delay buffers are inserted",
+                units="%",
+            ),
             Variable(
                 "CTS_OBSTRUCTION_AWARE",
                 Optional[bool],