diff --git a/PythonBytecode.txt b/PythonBytecode.txt
index 3f45bea..259860d 100644
--- a/PythonBytecode.txt
+++ b/PythonBytecode.txt
@@ -7,7 +7,7 @@ Python  MAGIC           Python  MAGIC           Python  MAGIC
 1.5     0x0A0D4E99      2.5     0x0A0DF2B3      3.5     0x0A0D0D16
 1.6     0x0A0DC4FC      2.6     0x0A0DF2D1      3.5.3   0x0A0D0D17
                         2.7     0x0A0DF303      3.6     0x0A0D0D33
-                                                3.7     0x0A0D0D41
+                                                3.7     0x0A0D0D42
 
 
                         1.0     1.1     1.2     1.3     1.4     1.5     1.6
diff --git a/pyc_module.h b/pyc_module.h
index 6710842..77e4734 100644
--- a/pyc_module.h
+++ b/pyc_module.h
@@ -29,7 +29,7 @@ enum PycMagic {
     MAGIC_3_5 = 0x0A0D0D16,
     MAGIC_3_5_3 = 0x0A0D0D17,
     MAGIC_3_6 = 0x0A0D0D33,
-    MAGIC_3_7 = 0x0A0D0D41,
+    MAGIC_3_7 = 0x0A0D0D42,
 };
 
 #define PYC_VERSION(maj, min)  MAGIC_##maj##_##min