diff --git a/libarchive/Makefile b/libarchive/Makefile
index 5d7b8e6..ad967ee 100644
--- a/libarchive/Makefile
+++ b/libarchive/Makefile
@@ -1,13 +1,14 @@
-CFLAGS     = -g
+CFLAGS     = -g 
 INCLUDE    = -I/usr/include -I.
 LIBS       = -larchive
 
-PYVER ?= 3.10
+PYVER ?= 3.9
 
 all: __libarchive.so
 
 _libarchive_wrap.c: _libarchive.i
-	swig -python -shadow _libarchive.i
+	#swig -python -c++ -Wall -shadow _libarchive.i
+	swig -python -Wall -shadow _libarchive.i
 
 _libarchive_wrap.o: _libarchive_wrap.c
 	${CC} -c ${CFLAGS} -fPIC ${INCLUDE} $$(python${PYVER}-config --cflags) _libarchive_wrap.c
diff --git a/libarchive/__init__.py b/libarchive/__init__.py
index a6053f5..f387896 100644
--- a/libarchive/__init__.py
+++ b/libarchive/__init__.py
@@ -29,12 +29,13 @@ import sys
 import time
 import warnings
 
-from ctypes import cdll, c_char_p
+#from ctypes import cdll, c_char_p
 
 from libarchive import _libarchive
 from io import StringIO
 
-PY3 = sys.version_info[0] == 3
+#PY3 = sys.version_info[0] == 3
+PY3 = True
 
 # Suggested block size for libarchive. Libarchive may adjust it.
 BLOCK_SIZE = 10240
diff --git a/libarchive/_libarchive.i b/libarchive/_libarchive.i
index 5c2645c..ccf48f2 100644
--- a/libarchive/_libarchive.i
+++ b/libarchive/_libarchive.i
@@ -318,8 +318,8 @@ extern const char	*archive_error_string(struct archive *);
 
 
 /* CONSTANTS */
-#define	ARCHIVE_VERSION_NUMBER 3000001
-#define	ARCHIVE_VERSION_STRING "libarchive 3.0.1b"
+#define	ARCHIVE_VERSION_NUMBER 3005003
+#define	ARCHIVE_VERSION_STRING "libarchive 3.5.2"
 #define	ARCHIVE_EOF	  1	/* Found end of archive. */
 #define	ARCHIVE_OK	  0	/* Operation was successful. */
 #define	ARCHIVE_RETRY	(-10)	/* Retry might succeed. */
diff --git a/libarchive/_libarchive_wrap.c b/libarchive/_libarchive_wrap.c
index 4701b3e..def83ec 100644
--- a/libarchive/_libarchive_wrap.c
+++ b/libarchive/_libarchive_wrap.c
@@ -760,7 +760,7 @@ SWIG_UnpackDataName(const char *c, void *ptr, size_t sz, const char *name) {
 #define PyString_Size(str) PyBytes_Size(str)	
 #define PyString_InternFromString(key) PyUnicode_InternFromString(key)
 #define Py_TPFLAGS_HAVE_CLASS Py_TPFLAGS_BASETYPE
-#define PyString_AS_STRING(x) PyUnicode_AsUTF8(x)
+#define PyString_AS_STRING(x) PyUnicode_AS_STRING(x)
 #define _PyLong_FromSsize_t(x) PyLong_FromSsize_t(x)
 
 #endif
@@ -3199,7 +3199,7 @@ PyObject *archive_read_data_into_str(struct archive *archive, int len) {
         PyErr_SetString(PyExc_MemoryError, "could not allocate string.");
         return NULL;
     }
-    if (len != archive_read_data(archive, (void*)PyString_AS_STRING(str), len)) {
+    if (len != archive_read_data(archive, PyString_AS_STRING(str), len)) {
         PyErr_SetString(PyExc_RuntimeError, "could not read requested data.");
         return NULL;
     }
@@ -3208,7 +3208,7 @@ PyObject *archive_read_data_into_str(struct archive *archive, int len) {
 
 PyObject *archive_write_data_from_str(struct archive *archive, PyObject *str) {
     int len = PyString_Size(str);
-    if (!archive_write_data(archive, (const void *)PyString_AS_STRING(str), len)) {
+    if (!archive_write_data(archive, PyString_AS_STRING(str), len)) {
         PyErr_SetString(PyExc_RuntimeError, "could not write requested data.");
         return NULL;
     }
@@ -6545,8 +6545,8 @@ SWIG_init(void) {
   
   SWIG_InstallConstants(d,swig_const_table);
   
-  SWIG_Python_SetConstant(d, "ARCHIVE_VERSION_NUMBER",SWIG_From_int((int)(3000001)));
-  SWIG_Python_SetConstant(d, "ARCHIVE_VERSION_STRING",SWIG_FromCharPtr("libarchive 3.0.1b"));
+  SWIG_Python_SetConstant(d, "ARCHIVE_VERSION_NUMBER",SWIG_From_int((int)(3005003)));
+  SWIG_Python_SetConstant(d, "ARCHIVE_VERSION_STRING",SWIG_FromCharPtr("libarchive 3.5.2"));
   SWIG_Python_SetConstant(d, "ARCHIVE_EOF",SWIG_From_int((int)(1)));
   SWIG_Python_SetConstant(d, "ARCHIVE_OK",SWIG_From_int((int)(0)));
   SWIG_Python_SetConstant(d, "ARCHIVE_RETRY",SWIG_From_int((int)((-10))));
diff --git a/tests.py b/tests.py
index fcba1d7..baec6dc 100644
--- a/tests.py
+++ b/tests.py
@@ -33,7 +33,8 @@ import io
 from libarchive import Archive, is_archive_name, is_archive
 from libarchive.zip import is_zipfile, ZipFile, ZipEntry
 
-PY3 = sys.version_info[0] == 3
+#PY3 = sys.version_info[0] == 3
+PY3 = True
 
 TMPDIR = tempfile.mkdtemp(suffix='.python-libarchive')
 ZIPFILE = 'test.zip'