diff --git a/meson.build b/meson.build
index e8085524..f2bee6d7 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project('thorvg',
         'cpp',
         default_options : ['buildtype=debugoptimized', 'b_sanitize=none', 'werror=false', 'optimization=s'],
-        version : '0.3.99',
+        version : '0.4.99',
         license : 'MIT')
 
 config_h = configuration_data()