diff --git a/appveyor.yml b/appveyor.yml
index f42224d5..0cf8f863 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 0.4.0.{build}
+version: 0.5.0.{build}
 
 environment:
   matrix:
diff --git a/mdbx.h b/mdbx.h
index a8afb5ee..d04825bd 100644
--- a/mdbx.h
+++ b/mdbx.h
@@ -639,7 +639,7 @@ typedef pthread_t mdbx_tid_t;
 /*----------------------------------------------------------------------------*/
 
 #define MDBX_VERSION_MAJOR 0
-#define MDBX_VERSION_MINOR 4
+#define MDBX_VERSION_MINOR 5
 
 #ifndef LIBMDBX_API
 #if defined(LIBMDBX_EXPORTS)