diff --git a/esphome/components/sensor/__init__.py b/esphome/components/sensor/__init__.py
index f076c7f17b..6bbab76363 100644
--- a/esphome/components/sensor/__init__.py
+++ b/esphome/components/sensor/__init__.py
@@ -96,6 +96,7 @@ from esphome.const import (
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_TEMPERATURE_DELTA,
     DEVICE_CLASS_TIMESTAMP,
+    DEVICE_CLASS_UPTIME,
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS,
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS_PARTS,
     DEVICE_CLASS_VOLTAGE,
@@ -174,6 +175,7 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_TEMPERATURE_DELTA,
     DEVICE_CLASS_TIMESTAMP,
+    DEVICE_CLASS_UPTIME,
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS,
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS_PARTS,
     DEVICE_CLASS_VOLTAGE,
diff --git a/esphome/const.py b/esphome/const.py
index fa1ea42bc6..4557380c73 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -1367,6 +1367,7 @@ DEVICE_CLASS_TEMPERATURE = "temperature"
 DEVICE_CLASS_TEMPERATURE_DELTA = "temperature_delta"
 DEVICE_CLASS_TIMESTAMP = "timestamp"
 DEVICE_CLASS_UPDATE = "update"
+DEVICE_CLASS_UPTIME = "uptime"
 DEVICE_CLASS_VIBRATION = "vibration"
 DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS = "volatile_organic_compounds"
 DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS_PARTS = "volatile_organic_compounds_parts"