diff --git a/requirements.txt b/requirements.txt
index adb784c..853a29d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ ads1015==0.0.5
 enviroplus==0.0.1
 i2cdevice==0.0.6
 ltr559==0.0.4
-numpy==1.18.1
+numpy==1.22.0
 paho-mqtt==1.5.0
 pimoroni-bme280==0.0.2
 -e git+https://github.com/reefab/pms5003-python@979931e0e816f5730aa1e4080db0dcce411ef589#egg=pms5003