diff --git a/subprojects/wren/meson.build b/subprojects/wren/meson.build
index 48c7f46..0f0026f 100644
--- a/subprojects/wren/meson.build
+++ b/subprojects/wren/meson.build
@@ -1,5 +1,5 @@
 project('wren', 'c',
-  version: '0.3.0',
+  version: '0.4.0',
   meson_version: '>=0.54.0',
   default_options: ['buildtype=release', 'c_std=c99', 'build_testing=true'],
 )
diff --git a/subprojects/wren/wren b/subprojects/wren/wren
index cd01246..4a18fc4 160000
--- a/subprojects/wren/wren
+++ b/subprojects/wren/wren
@@ -1 +1 @@
-Subproject commit cd012469976d1a9da796581cd9a9591842cb0cf8
+Subproject commit 4a18fc489f9ea3d253b20dd40f4cdad0d6bb40eb