diff --git a/source/FreeRTOS_BitConfig.c b/source/FreeRTOS_BitConfig.c
index 515b8770d..5fd3d2dee 100644
--- a/source/FreeRTOS_BitConfig.c
+++ b/source/FreeRTOS_BitConfig.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/FreeRTOS_DHCPv6.c b/source/FreeRTOS_DHCPv6.c
index 6bf6fc50a..978fa395d 100644
--- a/source/FreeRTOS_DHCPv6.c
+++ b/source/FreeRTOS_DHCPv6.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2022 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/FreeRTOS_ND.c b/source/FreeRTOS_ND.c
index 476c2a4c6..3dddfc470 100644
--- a/source/FreeRTOS_ND.c
+++ b/source/FreeRTOS_ND.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/FreeRTOS_RA.c b/source/FreeRTOS_RA.c
index a9ef1fc8b..2f6875ff8 100644
--- a/source/FreeRTOS_RA.c
+++ b/source/FreeRTOS_RA.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/FreeRTOS_Routing.c b/source/FreeRTOS_Routing.c
index 7be575193..097f91708 100644
--- a/source/FreeRTOS_Routing.c
+++ b/source/FreeRTOS_Routing.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/FreeRTOS_BitConfig.h b/source/include/FreeRTOS_BitConfig.h
index 952bfb714..3cc313d99 100644
--- a/source/include/FreeRTOS_BitConfig.h
+++ b/source/include/FreeRTOS_BitConfig.h
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/FreeRTOS_DHCPv6.h b/source/include/FreeRTOS_DHCPv6.h
index 0e2792c86..11bf3f033 100644
--- a/source/include/FreeRTOS_DHCPv6.h
+++ b/source/include/FreeRTOS_DHCPv6.h
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/FreeRTOS_IPv6.h b/source/include/FreeRTOS_IPv6.h
index ea2d9dbca..84b841595 100644
--- a/source/include/FreeRTOS_IPv6.h
+++ b/source/include/FreeRTOS_IPv6.h
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/FreeRTOS_ND.h b/source/include/FreeRTOS_ND.h
index e6119f05c..f7c791ace 100644
--- a/source/include/FreeRTOS_ND.h
+++ b/source/include/FreeRTOS_ND.h
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/FreeRTOS_Routing.h b/source/include/FreeRTOS_Routing.h
index dc45a0d67..0fa9fab88 100644
--- a/source/include/FreeRTOS_Routing.h
+++ b/source/include/FreeRTOS_Routing.h
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/portable/NetworkInterface/DriverSAM/NetworkInterface.c b/source/portable/NetworkInterface/DriverSAM/NetworkInterface.c
index 8a837dd35..b79d1008f 100644
--- a/source/portable/NetworkInterface/DriverSAM/NetworkInterface.c
+++ b/source/portable/NetworkInterface/DriverSAM/NetworkInterface.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/portable/NetworkInterface/loopback/loopbackNetworkInterface.c b/source/portable/NetworkInterface/loopback/loopbackNetworkInterface.c
index 9152d4744..ffe058be5 100644
--- a/source/portable/NetworkInterface/loopback/loopbackNetworkInterface.c
+++ b/source/portable/NetworkInterface/loopback/loopbackNetworkInterface.c
@@ -1,5 +1,5 @@
 /*
- * FreeRTOS+TCP V2.3.1
+ * FreeRTOS+TCP <DEVELOPMENT BRANCH>
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of