diff --git a/src/lib.rs b/src/lib.rs
index 1d2dfa2..9fcae3a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -64,6 +64,10 @@
 //! [PKCS#5v2 Password Based Encryption Scheme 2 (RFC 8018)]: https://tools.ietf.org/html/rfc8018#section-6.2
 //! [scrypt]: https://en.wikipedia.org/wiki/Scrypt
 
+/// Local Android change: Use std to allow building as a dylib.
+#[cfg(android_dylib)]
+extern crate std;
+
 #[cfg(feature = "pem")]
 extern crate alloc;
 #[cfg(feature = "std")]