1 files changed, 1 insertions, 1 deletions
diff --git a/dln.c b/dln.c
index 2251547c54..3b7ae0df8d 100644
--- a/dln.c
+++ b/dln.c
@@ -1244,7 +1244,7 @@ rb_w32_check_imported(HMODULE ext, HMODULE mine)
 #endif
 
 #ifdef USE_DLN_DLOPEN
-# include "internal/stdbool.h"
+# include "ruby/3/stdbool.h"
 # include "internal/warnings.h"
 COMPILER_WARNING_PUSH
 #if defined(__clang__) || GCC_VERSION_SINCE(4, 2, 0)