diff --git a/native/sql_parser_ex/Cargo.toml b/native/sql_parser_ex/Cargo.toml
index dcfc44e..5fed0e8 100644
--- a/native/sql_parser_ex/Cargo.toml
+++ b/native/sql_parser_ex/Cargo.toml
@@ -8,6 +8,10 @@ name = "sql_parser_ex"
 path = "src/lib.rs"
 crate-type = ["cdylib"]
 
+[features]
+nif_version_2_15 = ["rustler/nif_version_2_15"]
+nif_version_2_16 = ["rustler/nif_version_2_16", "nif_version_2_15"]
+
 [dependencies]
 rustler = { version = "0.37", features = ["derive"] }
 sqlparser = { version = "0.61", features = ["serde", "visitor"] }