diff --git a/Cargo.toml b/Cargo.toml
index 9bd2e51..973342c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ rustls-tls-webpki-roots = ["__rustls-tls", "webpki-roots"]
 __rustls-tls = ["rustls", "webpki"]
 
 [dependencies]
-base64 = { version = "0.13.0", optional = true }
+base64 = { version = "0.20.0", optional = true }
 byteorder = "1.3.2"
 bytes = "1.0"
 http = { version = "0.2", optional = true }