diff --git a/cmp.c b/cmp.c
index 918a069..405b578 100644
--- a/cmp.c
+++ b/cmp.c
@@ -24,7 +24,7 @@ THE SOFTWARE.
 
 #include "cmp.h"
 
-static const uint32_t version = 19;
+static const uint32_t version = 20;
 static const uint32_t mp_version = 5;
 
 enum {