diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c

index a41c97e..2c8a18f 100644

--- a/Modules/_hashopenssl.c

+++ b/Modules/_hashopenssl.c

@@ -984,6 +984,7 @@ init_hashlib(void)

     SSL_load_error_strings();

     SSL_library_init();

     ERR_load_crypto_strings();

+    OpenSSL_add_all_digests();

     Py_TYPE(&EVPtype) = &PyType_Type;

     if (PyType_Ready(&EVPtype) < 0)