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Diffstat (limited to 'Modules/_blake2/blake2b_impl.c')
-rw-r--r--Modules/_blake2/blake2b_impl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/_blake2/blake2b_impl.c b/Modules/_blake2/blake2b_impl.c
index 5d108ed..8b0d60d 100644
--- a/Modules/_blake2/blake2b_impl.c
+++ b/Modules/_blake2/blake2b_impl.c
@@ -409,6 +409,6 @@ static PyType_Slot blake2b_type_slots[] = {
PyType_Spec blake2b_type_spec = {
.name = "_blake2.blake2b",
.basicsize = sizeof(BLAKE2bObject),
- .flags = Py_TPFLAGS_DEFAULT,
+ .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE,
.slots = blake2b_type_slots
};