diff --git a/perf_counter.h b/perf_counter.h
index 3a68969..525cd2f 100644
--- a/perf_counter.h
+++ b/perf_counter.h
@@ -40,9 +40,9 @@ extern "C" {
  */
 #define __PERF_COUNTER_VER_MAJOR__          2
 #define __PERF_COUNTER_VER_MINOR__          3
-#define __PERF_COUNTER_VER_REVISE__         0
+#define __PERF_COUNTER_VER_REVISE__         1
 
-#define __PERF_COUNTER_VER_STR__            ""
+#define __PERF_COUNTER_VER_STR__            "dev"
 
 #define __PER_COUNTER_VER__    (__PERF_COUNTER_VER_MAJOR__ * 10000ul            \
                                +__PERF_COUNTER_VER_MINOR__ * 100ul              \