diff --git a/adafruit_bmp280.py b/adafruit_bmp280.py
index 6080e19..24f765f 100644
--- a/adafruit_bmp280.py
+++ b/adafruit_bmp280.py
@@ -105,23 +105,23 @@
 TC_X[_Y] where X=milliseconds and Y=tenths of a millisecond
 """
 STANDBY_TC_0_5 = const(0x00)  # 0.5ms
-STANDBY_TC_10 = const(0x06)  # 10ms
-STANDBY_TC_20 = const(0x07)  # 20ms
 STANDBY_TC_62_5 = const(0x01)  # 62.5ms
 STANDBY_TC_125 = const(0x02)  # 125ms
 STANDBY_TC_250 = const(0x03)  # 250ms
 STANDBY_TC_500 = const(0x04)  # 500ms
 STANDBY_TC_1000 = const(0x05)  # 1000ms
+STANDBY_TC_2000 = const(0x06)  # 2000ms
+STANDBY_TC_4000 = const(0x07)  # 4000ms
 
 _BMP280_STANDBY_TCS = (
     STANDBY_TC_0_5,
-    STANDBY_TC_10,
-    STANDBY_TC_20,
     STANDBY_TC_62_5,
     STANDBY_TC_125,
     STANDBY_TC_250,
     STANDBY_TC_500,
     STANDBY_TC_1000,
+    STANDBY_TC_2000,
+    STANDBY_TC_4000,
 )