--- contrib/python/zstandard/py2/c-ext/constants.c	(index)
+++ contrib/python/zstandard/py2/c-ext/constants.c	(working tree)
@@ -77,7 +77,6 @@ void constants_module_init(PyObject* mod) {
 	PyModule_AddIntConstant(mod, "CHAINLOG_MAX", ZSTD_CHAINLOG_MAX);
 	PyModule_AddIntConstant(mod, "HASHLOG_MIN", ZSTD_HASHLOG_MIN);
 	PyModule_AddIntConstant(mod, "HASHLOG_MAX", ZSTD_HASHLOG_MAX);
-	PyModule_AddIntConstant(mod, "HASHLOG3_MAX", ZSTD_HASHLOG3_MAX);
 	PyModule_AddIntConstant(mod, "SEARCHLOG_MIN", ZSTD_SEARCHLOG_MIN);
 	PyModule_AddIntConstant(mod, "SEARCHLOG_MAX", ZSTD_SEARCHLOG_MAX);
 	PyModule_AddIntConstant(mod, "MINMATCH_MIN", ZSTD_MINMATCH_MIN);
--- contrib/python/zstandard/py2/zstd.c	(index)
+++ contrib/python/zstandard/py2/zstd.c	(working tree)
@@ -213,1 +213,1 @@ void zstd_module_init(PyObject* m) {
-	if (ZSTD_VERSION_NUMBER != 10405 || ZSTD_versionNumber() != 10405) {
+	if (ZSTD_VERSION_NUMBER != 10506 || ZSTD_versionNumber() != 10506) {