diff --git a/source/_integrations/htu21d.markdown b/source/_integrations/htu21d.markdown
index 8d177dd51e8..2037c37b652 100644
--- a/source/_integrations/htu21d.markdown
+++ b/source/_integrations/htu21d.markdown
@@ -8,7 +8,7 @@ ha_release: 0.48
 ha_iot_class: Local Push
 ---
 
-The `htu21d` sensor platform allows you to read the temperature and humidity from a [HTU21D sensor](http://www.datasheetspdf.com/PDF/HTU21D/779951/1) connected via [I2c](https://en.wikipedia.org/wiki/I²C) bus (SDA, SCL pins).
+The `htu21d` sensor platform allows you to read the temperature and humidity from a [HTU21D sensor](https://cdn-shop.adafruit.com/datasheets/1899_HTU21D.pdf) connected via [I2c](https://en.wikipedia.org/wiki/I²C) bus (SDA, SCL pins).
 
 Tested devices: