diff --git a/crates/duckdb/Cargo.toml b/crates/duckdb/Cargo.toml
index 5e45b701..6a26438c 100644
--- a/crates/duckdb/Cargo.toml
+++ b/crates/duckdb/Cargo.toml
@@ -23,6 +23,9 @@ bundled = ["libduckdb-sys/bundled"]
 httpfs = ["libduckdb-sys/httpfs", "bundled"]
 json = ["libduckdb-sys/json", "bundled"]
 parquet = ["libduckdb-sys/parquet", "bundled"]
+openssl_vendored = ["libduckdb-sys/openssl_vendored", "bundled"]
+unstable_boringssl = ["libduckdb-sys/unstable_boringssl", "bundled"]
+openssl_bindgen = ["libduckdb-sys/openssl_bindgen", "bundled"]
 vtab = []
 vtab-loadable = ["vtab", "duckdb-loadable-macros"]
 vtab-excel = ["vtab", "calamine"]
diff --git a/crates/libduckdb-sys/Cargo.toml b/crates/libduckdb-sys/Cargo.toml
index 207bdf56..ab4e89ce 100644
--- a/crates/libduckdb-sys/Cargo.toml
+++ b/crates/libduckdb-sys/Cargo.toml
@@ -25,12 +25,17 @@ json = ["bundled"]
 parquet = ["bundled"]
 extensions-full = ["httpfs", "json", "parquet"]
 
+openssl_vendored = ["bundled", "openssl-src"]
+openssl_bindgen = ["bundled", "bindgen", "pkg-config", "vcpkg"]
+unstable_boringssl = ["bundled"]
+
 [dependencies]
 
 [build-dependencies]
 autocfg = { workspace = true }
 bindgen = { workspace = true, features = ["runtime"], optional = true }
 flate2 = { workspace = true }
+openssl-src = { version = "300.3.0", optional = true, features = ["legacy"] }
 pkg-config = { workspace = true, optional = true }
 cc = { workspace = true, features = ["parallel"], optional = true }
 vcpkg = { workspace = true, optional = true }