diff --git a/services/core/PlatformDriverAgent/platform_driver/interfaces/modbus_tk/requirements.txt b/services/core/PlatformDriverAgent/platform_driver/interfaces/modbus_tk/requirements.txt
index 9d037a5053..3089f96373 100644
--- a/services/core/PlatformDriverAgent/platform_driver/interfaces/modbus_tk/requirements.txt
+++ b/services/core/PlatformDriverAgent/platform_driver/interfaces/modbus_tk/requirements.txt
@@ -1,3 +1,3 @@
 modbus-tk==1.1.2
 pyserial==3.5
-PyYAML==3.12
+PyYAML==5.4