diff --git a/src/types.h b/src/types.h
index 5bea5d9..64aab38 100644
--- a/src/types.h
+++ b/src/types.h
@@ -15,7 +15,7 @@
 #include <cstring>
 
 #ifndef VERSION
-#define VERSION "5.25"
+#define VERSION "6.0"
 #endif
 
 constexpr auto MAX_PLY = 100;