diff --git a/platformio.ini b/platformio.ini
index 3665620..1d1685a 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -17,7 +17,7 @@ framework = arduino
 lib_deps = 
 	bblanchon/ArduinoJson@^7.0.0
 	;ihormelnyk/OpenTherm Library@^1.1.4
-	https://github.com/Laxilef/opentherm_library/archive/refs/heads/dev.zip
+	https://github.com/Laxilef/opentherm_library/archive/refs/heads/fix_start_bit.zip
 	arduino-libraries/ArduinoMqttClient@^0.1.7
 	;lennarthennigs/ESP Telnet@^2.1.2
 	https://github.com/LennartHennigs/ESPTelnet/archive/refs/tags/2.2.zip
diff --git a/src/OpenThermTask.h b/src/OpenThermTask.h
index 29ac1f6..d1d561d 100644
--- a/src/OpenThermTask.h
+++ b/src/OpenThermTask.h
@@ -42,6 +42,7 @@ protected:
   void setup() {
     Log.sinfoln(FPSTR(L_OT), F("Started. GPIO IN: %hhu, GPIO OUT: %hhu"), settings.opentherm.inPin, settings.opentherm.outPin);
 
+    ot->setMinWaitTimeForStartBit(19000); // 20ms - 5%
     ot->setAfterSendRequestCallback(OpenThermTask::sendRequestCallback);
     ot->setYieldCallback([this]() {
       this->delay(25);