diff --git a/cpu-miner.c b/cpu-miner.c
index 65795b5..464679b 100644
--- a/cpu-miner.c
+++ b/cpu-miner.c
@@ -345,7 +345,7 @@ err_out:
 }
 
 #define BLOCK_VERSION_MASK 0x000000ff
-#define BLOCK_VERSION_CURRENT 3
+#define BLOCK_VERSION_CURRENT 4
 
 static bool gbt_work_decode(const json_t *val, struct work *work)
 {