diff --git a/esphome/components/sensor/ppd42x.py b/esphome/components/sensor/ppd42x.py
index 949ea9de1f..09522010f9 100644
--- a/esphome/components/sensor/ppd42x.py
+++ b/esphome/components/sensor/ppd42x.py
@@ -48,8 +48,8 @@ PPD42X_SENSOR_SCHEMA = sensor.SENSOR_SCHEMA.extend({
 PLATFORM_SCHEMA = vol.All(sensor.PLATFORM_SCHEMA.extend({
     cv.GenerateID(): cv.declare_variable_id(PPD42XComponent),
     vol.Required(CONF_TYPE): cv.one_of(*PPD42X_TYPES, upper=True),
-    vol.Required(CONF_PIN_02_5): pins.gpio_input_pin_schema,
-    vol.Required(CONF_PIN_10_0): pins.gpio_input_pin_schema,
+    vol.Optional(CONF_PIN_02_5): pins.gpio_input_pin_schema,
+    vol.Optional(CONF_PIN_10_0): pins.gpio_input_pin_schema,
 
     vol.Optional(CONF_PM_2_5): cv.nameable(PPD42X_SENSOR_SCHEMA),
     vol.Optional(CONF_PM_10_0): cv.nameable(PPD42X_SENSOR_SCHEMA),
diff --git a/tests/test2.yaml b/tests/test2.yaml
index 3720602df2..dae360e5f4 100644
--- a/tests/test2.yaml
+++ b/tests/test2.yaml
@@ -82,11 +82,15 @@ sensor:
 
   - platform: ppd42x
     type: PPD42
+    pin_10_0: GPIO32
+    pin_2_5: GPIO27
     pm_2_5:
       name: "PM 2.5 Concentration"
     pm_10_0:
       name: "PM 10.0 Concentration"
   - platform: ppd42x
+    pin_10_0: GPIO32
+    pin_2_5: GPIO27
     type: PPD42NJ
     pm_2_5:
       name: "PM 2.5 Concentration"
diff --git a/tests/test3.yaml b/tests/test3.yaml
index 24836bd58e..9c43b9b0e7 100644
--- a/tests/test3.yaml
+++ b/tests/test3.yaml
@@ -46,15 +46,19 @@ deep_sleep:
 sensor:
   - platform: ppd42x
     type: PPD42
+    pin_10_0: GPIO32
+    pin_2_5: GPIO27
     pm_2_5:
       name: "PM 2.5 Concentration"
     pm_10_0:
       name: "PM 10.0 Concentration"
   - platform: ppd42x
     type: PPD42NJ
+    pin_2_5: GPIO27
     pm_2_5:
       name: "PM 2.5 Concentration"
   - platform: ppd42x
+    pin_10_0: GPIO32
     type: PPD42NS
     pm_10_0:
       name: "PM 10.0 Concentration"