diff --git a/meson.build b/meson.build
index 074147303a86da420837286b7bee9956a5fb1847..6eb134ad80616418a1c6db62f2aac556ea5c9fa2 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@
 # It is not used when building Dynare as a whole.
 
 project('dynare-preprocessor', 'cpp',
-        version : '6.3',
+        version : '6.4',
         # NB: update C++ standard in .clang-format whenever the following is modified
         default_options : [ 'cpp_std=gnu++20', 'warning_level=2' ],
         meson_version : '>=0.64.0')