diff --git a/requirements_all.txt b/requirements_all.txt
index dae1f319a23..de1fa9e40ac 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -149,4 +149,4 @@ python-telegram-bot==2.8.7
 py-cpuinfo==0.1.6
 
 # Radio Thermostat (thermostat.radiotherm)
-radiotherm=1.2
+radiotherm==1.2