diff --git a/miniupnpc/Makefile b/miniupnpc/Makefile
index dc1e538..a53ff89 100644
--- a/miniupnpc/Makefile
+++ b/miniupnpc/Makefile
@@ -129,7 +129,11 @@ clean:
 	# clean jnaerator stuff
 	$(RM) _jnaerator.* java/miniupnpc_$(OS).jar
 
-install:	$(FILESTOINSTALL)
+updateversion:	miniupnpc.h
+	cp miniupnpc.h miniupnpc.h.bak
+	sed 's/\(.*MINIUPNPC_API_VERSION\s\+\)[0-9]\+/\1$(APIVERSION)/' < miniupnpc.h.bak > miniupnpc.h
+
+install:	updateversion $(FILESTOINSTALL)
 	$(INSTALL) -d $(INSTALLDIRINC)
 	$(INSTALL) -m 644 $(HEADERS) $(INSTALLDIRINC)
 	$(INSTALL) -d $(INSTALLDIRLIB)
diff --git a/miniupnpc/miniupnpc.h b/miniupnpc/miniupnpc.h
index c8211e8..6a7eb56 100644
--- a/miniupnpc/miniupnpc.h
+++ b/miniupnpc/miniupnpc.h
@@ -1,4 +1,4 @@
-/* $Id: miniupnpc.h,v 1.24 2011/09/12 09:52:02 nanard Exp $ */
+/* $Id: miniupnpc.h,v 1.25 2011/10/09 16:17:29 nanard Exp $ */
 /* Project: miniupnp
  * http://miniupnp.free.fr/
  * Author: Thomas Bernard
@@ -17,6 +17,10 @@
 #define UPNPDISCOVER_SOCKET_ERROR (-101)
 #define UPNPDISCOVER_MEMORY_ERROR (-102)
 
+/* versions : */
+#define MINIUPNPC_VERSION	"1.6"
+#define MINIUPNPC_API_VERSION	8
+
 #ifdef __cplusplus
 extern "C" {
 #endif