diff --git a/TNC/KissHardware.cpp b/TNC/KissHardware.cpp
index 9b39611..418e6ee 100644
--- a/TNC/KissHardware.cpp
+++ b/TNC/KissHardware.cpp
@@ -44,10 +44,10 @@ int powerOffViaUSB(void)
 namespace mobilinkd { namespace tnc { namespace kiss {
 
 #ifdef NUCLEOTNC
-const char FIRMWARE_VERSION[] = "2.1.4";
+const char FIRMWARE_VERSION[] = "2.1.5";
 const char HARDWARE_VERSION[] = "Mobilinkd NucleoTNC";
 #else
-const char FIRMWARE_VERSION[] = "2.1.4";
+const char FIRMWARE_VERSION[] = "2.1.5";
 const char HARDWARE_VERSION[] = "Mobilinkd TNC3 2.1.1";
 #endif