Renamed PyString to PyBytes
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index 9b4d8e5..1d5f070 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -339,7 +339,7 @@
 
     temp = self->hash_state;
     sha1_done(&temp, digest);
-    return PyString_FromStringAndSize((const char *)digest, SHA1_DIGESTSIZE);
+    return PyBytes_FromStringAndSize((const char *)digest, SHA1_DIGESTSIZE);
 }
 
 PyDoc_STRVAR(SHA1_hexdigest__doc__,