--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,3 +65,3 @@
 deprecated = []
-ffi = ["libc"]
+#ffi = ["libc"]
 full = [
@@ -76,3 +76,3 @@
 http2 = ["h2"]
-nightly = []
+#nightly = []
 runtime = [