diff --git a/services/core/PlatformDriverAgent/requirements.txt b/services/core/PlatformDriverAgent/requirements.txt
index f19047e936..23203ca7eb 100644
--- a/services/core/PlatformDriverAgent/requirements.txt
+++ b/services/core/PlatformDriverAgent/requirements.txt
@@ -1,4 +1,4 @@
 bacpypes==0.16.7
-pymodbus==2.5.2
 modbus-tk==1.1.2
+pymodbus==2.5.3
 pyserial==3.5