diff --git a/src/Network/net_fdm.hxx b/src/Network/net_fdm.hxx
index 0e316446f..253948478 100644
--- a/src/Network/net_fdm.hxx
+++ b/src/Network/net_fdm.hxx
@@ -22,7 +22,7 @@
 // I am not aware of any platforms that don't use 4 bytes for float
 // and 8 bytes for double.
 
-const uint32_t FG_NET_FDM_VERSION = 24;
+const uint32_t FG_NET_FDM_VERSION = 25;
 
 
 // Define a structure containing the top level flight dynamics model