diff --git a/src/mainboard/google/hatch/variants/kohaku/overridetree.cb b/src/mainboard/google/hatch/variants/kohaku/overridetree.cb
index 55ac071be5..d515ecc44d 100644
--- a/src/mainboard/google/hatch/variants/kohaku/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/kohaku/overridetree.cb
@@ -60,6 +60,8 @@ chip soc/intel/cannonlake
 		},
 		.i2c[1] = {
 			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 60,
+			.fall_time_ns = 25,
 		},
 		.i2c[2] = {
 			.speed = I2C_SPEED_FAST,
@@ -68,8 +70,8 @@ chip soc/intel/cannonlake
 		},
 		.i2c[4] = {
 			.speed = I2C_SPEED_FAST,
-			.rise_time_ns = 100,
-			.fall_time_ns = 20,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
 		},
 		.gspi[0] = {
 		       .speed_mhz = 1,