diff --git a/contrib/gana b/contrib/gana
index 689c91490..79a1ebfdf 160000
--- a/contrib/gana
+++ b/contrib/gana
@@ -1 +1 @@
-Subproject commit 689c91490ae14721a9ad7969d8fcbc0b982488e8
+Subproject commit 79a1ebfdffab6b01137a4642161e907f89c5c535
diff --git a/src/include/taler_util.h b/src/include/taler_util.h
index 0b761ae92..4b03fefae 100644
--- a/src/include/taler_util.h
+++ b/src/include/taler_util.h
@@ -26,6 +26,12 @@
 #include "taler_amount_lib.h"
 #include "taler_crypto_lib.h"
 
+/**
+ * Version of the Taler API, in hex.
+ * Thus 0.8.4-1 = 0x00080401.
+ */
+#define TALER_API_VERSION 0x00080401
+
 /**
  * Stringify operator.
  *