diff --git a/common.mk b/common.mk
index 3e8626532a..c6d6e54c72 100644
--- a/common.mk
+++ b/common.mk
@@ -3367,6 +3367,7 @@ cont.$(OBJEXT): $(top_srcdir)/internal/cont.h
 cont.$(OBJEXT): $(top_srcdir)/internal/gc.h
 cont.$(OBJEXT): $(top_srcdir)/internal/imemo.h
 cont.$(OBJEXT): $(top_srcdir)/internal/proc.h
+cont.$(OBJEXT): $(top_srcdir)/internal/sanitizers.h
 cont.$(OBJEXT): $(top_srcdir)/internal/serial.h
 cont.$(OBJEXT): $(top_srcdir)/internal/static_assert.h
 cont.$(OBJEXT): $(top_srcdir)/internal/vm.h
diff --git a/cont.c b/cont.c
index 8a9aded713..19e719ccd9 100644
--- a/cont.c
+++ b/cont.c
@@ -30,6 +30,7 @@ extern int madvise(caddr_t, size_t, int);
 #include "internal.h"
 #include "internal/cont.h"
 #include "internal/proc.h"
+#include "internal/sanitizers.h"
 #include "internal/warnings.h"
 #include "ruby/fiber/scheduler.h"
 #include "mjit.h"
@@ -1161,6 +1162,7 @@ cont_save_machine_stack(rb_thread_t *th, rb_context_t *cont)
     }
 
     FLUSH_REGISTER_WINDOWS;
+    asan_unpoison_memory_region(cont->machine.stack_src, size, false);
     MEMCPY(cont->machine.stack, cont->machine.stack_src, VALUE, size);
 }