diff --git a/Python/frozen.c b/Python/frozen.c
index 25fdc17..9bc662b 100644
--- a/Python/frozen.c
+++ b/Python/frozen.c
@@ -28,7 +28,7 @@
 
 #define SIZE (int)sizeof(M___hello__)
 
-static struct _frozen _PyImport_FrozenModules[] = {
+static const struct _frozen _PyImport_FrozenModules[] = {
     /* importlib */
     {"_frozen_importlib", _Py_M__importlib, (int)sizeof(_Py_M__importlib)},
     /* Test module */
@@ -42,4 +42,4 @@
 /* Embedding apps may change this pointer to point to their favorite
    collection of frozen modules: */
 
-struct _frozen *PyImport_FrozenModules = _PyImport_FrozenModules;
+const struct _frozen *PyImport_FrozenModules = _PyImport_FrozenModules;
diff --git a/Python/importlib.h b/Python/importlib.h
index 13db56d..b4aab83 100644
--- a/Python/importlib.h
+++ b/Python/importlib.h
@@ -1,5 +1,5 @@
 /* Auto-generated by Modules/_freeze_importlib.c */
-unsigned char _Py_M__importlib[] = {
+const unsigned char _Py_M__importlib[] = {
     99,0,0,0,0,0,0,0,0,0,0,0,0,6,0,0,
     0,64,0,0,0,115,229,3,0,0,100,0,0,90,0,0,
     100,130,0,90,1,0,100,4,0,100,5,0,132,0,0,90,