diff --git a/meson.build b/meson.build
index 7e08e94b9f53796867d0814f5af6709ef0228a55..fa955125c13eca833356c89b9884f87552e42c87 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('dynare',
         'cpp', 'fortran', 'c',
-        version : '6.3',
+        version : '6.4',
         # NB: update C++ standard in .clang-format whenever the following is modified
         default_options : [ 'cpp_std=gnu++20', 'fortran_std=f2018',
                             'c_std=gnu17', 'warning_level=2' ],
diff --git a/preprocessor b/preprocessor
index 6e981b8a7f256a40cac45c37a73022ae1d6597d7..198bee0b15d351065ffe42b60fcdab63fe7aec37 160000
--- a/preprocessor
+++ b/preprocessor
@@ -1 +1 @@
-Subproject commit 6e981b8a7f256a40cac45c37a73022ae1d6597d7
+Subproject commit 198bee0b15d351065ffe42b60fcdab63fe7aec37