diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
    strategy:
      matrix:
        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
-        py: ["3.12", "3.11", "3.10", "3.9", "3.8"]

    runs-on: ${{ matrix.os }}
    name: Run test with Python ${{ matrix.py }} on ${{ matrix.os }}

diff --git a/msgpack/_unpacker.pyx b/msgpack/_unpacker.pyx
@@ -35,7 +35,7 @@ cdef extern from "unpack.h":
        PyObject* timestamp_t
        PyObject *giga;
        PyObject *utc;
-        char *unicode_errors
        Py_ssize_t max_str_len
        Py_ssize_t max_bin_len
        Py_ssize_t max_array_len