diff --git a/Python/importlib.h b/Python/importlib.h
index ed5bcf5..b3cd548 100644
--- a/Python/importlib.h
+++ b/Python/importlib.h
@@ -3354,189 +3354,190 @@
     115,26,0,0,0,0,11,12,1,15,2,24,1,12,1,18,
     1,6,3,12,1,23,1,6,1,4,4,35,3,40,2,114,
     77,1,0,0,99,2,0,0,0,0,0,0,0,16,0,0,
-    0,13,0,0,0,67,0,0,0,115,228,2,0,0,124,1,
+    0,13,0,0,0,67,0,0,0,115,237,2,0,0,124,1,
     0,97,0,0,124,0,0,97,1,0,116,1,0,106,2,0,
     106,3,0,114,33,0,116,4,0,97,5,0,110,6,0,116,
     6,0,97,5,0,116,7,0,116,1,0,131,1,0,125,2,
-    0,120,119,0,116,1,0,106,8,0,106,9,0,131,0,0,
-    68,93,102,0,92,2,0,125,3,0,125,4,0,116,10,0,
+    0,120,128,0,116,1,0,106,8,0,106,9,0,131,0,0,
+    68,93,111,0,92,2,0,125,3,0,125,4,0,116,10,0,
     124,4,0,124,2,0,131,2,0,114,67,0,116,11,0,124,
-    4,0,100,1,0,131,2,0,115,169,0,124,3,0,116,1,
-    0,106,12,0,107,6,0,114,136,0,116,13,0,124,4,0,
-    95,14,0,113,166,0,116,0,0,106,15,0,124,3,0,131,
-    1,0,114,166,0,116,16,0,124,4,0,95,14,0,113,166,
-    0,113,169,0,113,67,0,113,67,0,87,116,1,0,106,8,
-    0,116,17,0,25,125,5,0,120,76,0,100,27,0,68,93,
-    68,0,125,6,0,124,6,0,116,1,0,106,8,0,107,7,
-    0,114,232,0,116,13,0,106,18,0,124,6,0,131,1,0,
-    125,7,0,110,13,0,116,1,0,106,8,0,124,6,0,25,
-    125,7,0,116,19,0,124,5,0,124,6,0,124,7,0,131,
-    3,0,1,113,193,0,87,100,6,0,100,7,0,103,1,0,
-    102,2,0,100,8,0,100,9,0,100,7,0,103,2,0,102,
-    2,0,102,2,0,125,8,0,120,149,0,124,8,0,68,93,
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-    0,100,11,0,132,0,0,124,10,0,68,131,1,0,131,1,
-    0,115,92,1,116,21,0,130,1,0,124,10,0,100,12,0,
-    25,125,11,0,124,9,0,116,1,0,106,8,0,107,6,0,
-    114,134,1,116,1,0,106,8,0,124,9,0,25,125,12,0,
-    80,113,49,1,121,20,0,116,13,0,106,18,0,124,9,0,
-    131,1,0,125,12,0,80,87,113,49,1,4,116,22,0,107,
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-    1,1,1,100,15,0,125,13,0,89,110,1,0,88,116,13,
-    0,106,18,0,100,16,0,131,1,0,125,14,0,124,9,0,
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-    0,100,20,0,124,11,0,131,3,0,1,116,19,0,124,5,
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+    131,3,0,1,116,19,0,124,5,0,100,20,0,124,11,0,
+    131,3,0,1,116,19,0,124,5,0,100,21,0,100,22,0,
+    106,23,0,124,10,0,131,1,0,131,3,0,1,116,19,0,
+    124,5,0,100,23,0,116,24,0,131,0,0,131,3,0,1,
+    116,25,0,106,26,0,116,0,0,106,27,0,131,0,0,131,
+    1,0,1,124,9,0,100,9,0,107,2,0,114,233,2,116,
+    28,0,106,29,0,100,24,0,131,1,0,1,100,25,0,116,
+    25,0,107,6,0,114,233,2,100,26,0,116,30,0,95,31,
+    0,113,233,2,110,0,0,100,2,0,83,40,28,0,0,0,
+    117,250,0,0,0,83,101,116,117,112,32,105,109,112,111,114,
+    116,108,105,98,32,98,121,32,105,109,112,111,114,116,105,110,
+    103,32,110,101,101,100,101,100,32,98,117,105,108,116,45,105,
+    110,32,109,111,100,117,108,101,115,32,97,110,100,32,105,110,
+    106,101,99,116,105,110,103,32,116,104,101,109,10,32,32,32,
+    32,105,110,116,111,32,116,104,101,32,103,108,111,98,97,108,
+    32,110,97,109,101,115,112,97,99,101,46,10,10,32,32,32,
+    32,65,115,32,115,121,115,32,105,115,32,110,101,101,100,101,
+    100,32,102,111,114,32,115,121,115,46,109,111,100,117,108,101,
+    115,32,97,99,99,101,115,115,32,97,110,100,32,95,105,109,
+    112,32,105,115,32,110,101,101,100,101,100,32,116,111,32,108,
+    111,97,100,32,98,117,105,108,116,45,105,110,10,32,32,32,
+    32,109,111,100,117,108,101,115,44,32,116,104,111,115,101,32,
+    116,119,111,32,109,111,100,117,108,101,115,32,109,117,115,116,
+    32,98,101,32,101,120,112,108,105,99,105,116,108,121,32,112,
+    97,115,115,101,100,32,105,110,46,10,10,32,32,32,32,114,
+    149,0,0,0,78,114,48,0,0,0,114,170,0,0,0,244,
+    8,0,0,0,98,117,105,108,116,105,110,115,114,186,0,0,
+    0,116,5,0,0,0,112,111,115,105,120,245,1,0,0,0,
+    47,244,2,0,0,0,110,116,245,1,0,0,0,92,99,1,
+    0,0,0,0,0,0,0,2,0,0,0,3,0,0,0,115,
+    0,0,0,115,33,0,0,0,124,0,0,93,23,0,125,1,
+    0,116,0,0,124,1,0,131,1,0,100,0,0,107,2,0,
+    86,1,113,3,0,100,1,0,83,40,2,0,0,0,114,29,
+    0,0,0,78,40,1,0,0,0,114,31,0,0,0,40,2,
+    0,0,0,114,22,0,0,0,114,118,0,0,0,114,4,0,
+    0,0,114,4,0,0,0,114,5,0,0,0,114,2,1,0,
+    0,210,6,0,0,115,2,0,0,0,6,0,117,25,0,0,
+    0,95,115,101,116,117,112,46,60,108,111,99,97,108,115,62,
+    46,60,103,101,110,101,120,112,114,62,114,71,0,0,0,117,
+    30,0,0,0,105,109,112,111,114,116,108,105,98,32,114,101,
+    113,117,105,114,101,115,32,112,111,115,105,120,32,111,114,32,
+    110,116,114,72,0,0,0,114,95,0,0,0,116,6,0,0,
+    0,119,105,110,114,101,103,114,206,0,0,0,114,3,0,0,
+    0,114,25,0,0,0,114,21,0,0,0,114,30,0,0,0,
+    114,6,0,0,0,117,4,0,0,0,46,112,121,119,117,6,
+    0,0,0,95,100,46,112,121,100,84,40,4,0,0,0,117,
+    3,0,0,0,95,105,111,117,9,0,0,0,95,119,97,114,
+    110,105,110,103,115,117,8,0,0,0,98,117,105,108,116,105,
+    110,115,117,7,0,0,0,109,97,114,115,104,97,108,40,32,
+    0,0,0,114,97,0,0,0,114,7,0,0,0,114,105,0,
+    0,0,114,106,0,0,0,114,108,0,0,0,114,75,1,0,
+    0,114,107,0,0,0,114,65,0,0,0,114,152,0,0,0,
+    244,5,0,0,0,105,116,101,109,115,114,187,0,0,0,114,
+    61,0,0,0,114,163,0,0,0,114,194,0,0,0,114,149,
+    0,0,0,114,166,0,0,0,114,202,0,0,0,114,56,0,
+    0,0,114,198,0,0,0,114,60,0,0,0,244,3,0,0,
+    0,97,108,108,114,89,0,0,0,114,154,0,0,0,114,26,
+    0,0,0,114,11,0,0,0,114,4,1,0,0,114,192,0,
+    0,0,114,74,1,0,0,114,122,0,0,0,114,251,0,0,
+    0,114,205,0,0,0,114,209,0,0,0,40,16,0,0,0,
+    244,10,0,0,0,115,121,115,95,109,111,100,117,108,101,244,
+    11,0,0,0,95,105,109,112,95,109,111,100,117,108,101,116,
+    11,0,0,0,109,111,100,117,108,101,95,116,121,112,101,114,
+    66,0,0,0,114,145,0,0,0,116,11,0,0,0,115,101,
+    108,102,95,109,111,100,117,108,101,116,12,0,0,0,98,117,
+    105,108,116,105,110,95,110,97,109,101,116,14,0,0,0,98,
+    117,105,108,116,105,110,95,109,111,100,117,108,101,116,10,0,
+    0,0,111,115,95,100,101,116,97,105,108,115,116,10,0,0,
+    0,98,117,105,108,116,105,110,95,111,115,114,21,0,0,0,
+    114,25,0,0,0,116,9,0,0,0,111,115,95,109,111,100,
+    117,108,101,116,13,0,0,0,116,104,114,101,97,100,95,109,
+    111,100,117,108,101,116,14,0,0,0,119,101,97,107,114,101,
+    102,95,109,111,100,117,108,101,116,13,0,0,0,119,105,110,
+    114,101,103,95,109,111,100,117,108,101,114,4,0,0,0,114,
+    4,0,0,0,114,5,0,0,0,244,6,0,0,0,95,115,
+    101,116,117,112,173,6,0,0,115,102,0,0,0,0,9,6,
+    1,6,2,12,1,9,2,6,2,12,1,28,1,15,1,24,
+    1,15,1,12,1,15,1,22,2,13,1,13,1,15,1,18,
+    2,13,1,20,2,33,1,19,2,31,1,10,1,15,1,13,
+    1,4,2,3,1,15,1,5,1,13,1,12,2,12,2,3,
+    1,19,1,13,2,11,1,15,2,12,1,15,1,19,2,16,
+    1,16,1,16,1,16,1,25,2,19,1,19,1,12,1,13,
+    1,12,1,114,86,1,0,0,99,2,0,0,0,0,0,0,
+    0,3,0,0,0,3,0,0,0,67,0,0,0,115,136,0,
+    0,0,116,0,0,124,0,0,124,1,0,131,2,0,1,116,
+    1,0,131,0,0,125,2,0,116,2,0,106,3,0,106,4,
+    0,116,5,0,106,6,0,124,2,0,140,0,0,103,1,0,
+    131,1,0,1,116,2,0,106,7,0,106,8,0,116,9,0,
+    131,1,0,1,116,2,0,106,7,0,106,8,0,116,10,0,
+    131,1,0,1,116,11,0,106,12,0,100,1,0,107,2,0,
+    114,116,0,116,2,0,106,7,0,106,8,0,116,13,0,131,
+    1,0,1,110,0,0,116,2,0,106,7,0,106,8,0,116,
+    14,0,131,1,0,1,100,2,0,83,40,3,0,0,0,117,
+    50,0,0,0,73,110,115,116,97,108,108,32,105,109,112,111,
+    114,116,108,105,98,32,97,115,32,116,104,101,32,105,109,112,
+    108,101,109,101,110,116,97,116,105,111,110,32,111,102,32,105,
+    109,112,111,114,116,46,114,80,1,0,0,78,40,15,0,0,
+    0,114,86,1,0,0,114,215,0,0,0,114,7,0,0,0,
+    114,26,1,0,0,114,192,0,0,0,114,33,1,0,0,114,
+    47,1,0,0,114,55,1,0,0,114,251,0,0,0,114,194,
+    0,0,0,114,202,0,0,0,114,3,0,0,0,114,56,0,
+    0,0,114,205,0,0,0,114,21,1,0,0,40,3,0,0,
+    0,114,84,1,0,0,114,85,1,0,0,116,17,0,0,0,
+    115,117,112,112,111,114,116,101,100,95,108,111,97,100,101,114,
+    115,114,4,0,0,0,114,4,0,0,0,114,5,0,0,0,
+    244,8,0,0,0,95,105,110,115,116,97,108,108,249,6,0,
+    0,115,16,0,0,0,0,2,13,1,9,1,28,1,16,1,
+    16,1,15,1,19,1,114,87,1,0,0,40,3,0,0,0,
+    117,3,0,0,0,119,105,110,114,1,0,0,0,114,2,0,
+    0,0,40,77,0,0,0,114,58,0,0,0,114,10,0,0,
+    0,114,11,0,0,0,114,17,0,0,0,114,19,0,0,0,
+    114,28,0,0,0,114,38,0,0,0,114,43,0,0,0,114,
+    44,0,0,0,114,45,0,0,0,114,54,0,0,0,114,64,
+    0,0,0,114,65,0,0,0,244,8,0,0,0,95,95,99,
+    111,100,101,95,95,114,188,0,0,0,114,67,0,0,0,114,
+    92,0,0,0,114,81,0,0,0,114,88,0,0,0,114,68,
+    0,0,0,114,70,0,0,0,114,91,0,0,0,114,96,0,
+    0,0,114,99,0,0,0,114,102,0,0,0,114,15,0,0,
+    0,114,181,0,0,0,114,14,0,0,0,114,18,0,0,0,
+    116,17,0,0,0,95,82,65,87,95,77,65,71,73,67,95,
+    78,85,77,66,69,82,114,113,0,0,0,114,122,0,0,0,
+    114,107,0,0,0,114,108,0,0,0,114,120,0,0,0,114,
+    123,0,0,0,114,131,0,0,0,114,133,0,0,0,114,141,
+    0,0,0,114,148,0,0,0,114,151,0,0,0,114,159,0,
+    0,0,114,162,0,0,0,114,165,0,0,0,114,168,0,0,
+    0,114,176,0,0,0,114,185,0,0,0,114,190,0,0,0,
+    114,193,0,0,0,114,194,0,0,0,114,202,0,0,0,114,
+    205,0,0,0,114,218,0,0,0,114,224,0,0,0,114,244,
+    0,0,0,114,248,0,0,0,114,254,0,0,0,114,4,1,
+    0,0,114,255,0,0,0,114,5,1,0,0,114,20,1,0,
+    0,114,21,1,0,0,114,33,1,0,0,114,48,1,0,0,
+    114,54,1,0,0,114,56,1,0,0,114,59,1,0,0,114,
+    60,1,0,0,114,63,1,0,0,114,64,1,0,0,114,65,
+    1,0,0,114,71,1,0,0,114,73,1,0,0,114,215,0,
+    0,0,114,77,1,0,0,114,86,1,0,0,114,87,1,0,
+    0,114,4,0,0,0,114,4,0,0,0,114,4,0,0,0,
+    114,5,0,0,0,244,8,0,0,0,60,109,111,100,117,108,
+    101,62,8,0,0,0,115,140,0,0,0,6,21,6,3,12,
+    13,12,10,12,9,12,6,12,12,12,10,12,6,12,7,15,
+    22,12,8,15,3,12,12,6,2,6,3,22,4,19,68,19,
+    23,12,19,12,20,12,109,22,1,18,2,6,2,9,2,9,
+    1,9,2,15,27,12,23,12,21,12,12,18,8,12,13,12,
+    11,12,55,12,18,12,11,12,11,12,13,21,55,21,12,18,
+    12,19,57,19,54,19,50,19,34,22,132,19,29,25,43,25,
+    19,6,3,19,45,19,55,19,18,19,91,19,128,19,13,12,
+    9,12,17,12,17,6,2,12,50,12,13,18,24,12,34,12,
+    15,12,11,24,36,12,76,
 };
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index b92a8bd..40f6ab4 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -866,7 +866,8 @@
      * be set if __main__ gets further initialized later in the startup
      * process.
      */
-    if (PyDict_GetItemString(d, "__loader__") == NULL) {
+    PyObject *loader = PyDict_GetItemString(d, "__loader__");
+    if (loader == NULL || loader == Py_None) {
         PyObject *loader = PyObject_GetAttrString(interp->importlib,
                                                   "BuiltinImporter");
         if (loader == NULL) {