diff --git a/src/sys.c b/src/sys.c
index ad61566..d8d4d05 100644
--- a/src/sys.c
+++ b/src/sys.c
@@ -7,9 +7,9 @@
 #define KRK_VERSION_MINOR  5
 #define KRK_VERSION_PATCH  0
 #define KRK_VERSION_LEVEL  0xa
-#define KRK_VERSION_SERIAL 0x0
+#define KRK_VERSION_SERIAL 0x1
 
-#define KRK_VERSION_EXTRA_BASE  "a0"
+#define KRK_VERSION_EXTRA_BASE  "a1"
 
 #ifndef KRK_STATIC_ONLY
 #define KRK_VERSION_EXTRA KRK_VERSION_EXTRA_BASE