diff --git a/Cargo.toml b/Cargo.toml
index a1bd3462..2fe3b5c3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,7 @@ secp256k1 = { version = "0.21", features = ["recovery"], optional = true }
 once_cell = { version = "1.8.0", optional = true }
 
 ## HTTP
-base64 = { version = "0.13", optional = true }
+base64 = { version = "0.20", optional = true }
 bytes = { version = "1.0", optional = true }
 reqwest = { version = "0.11", optional = true, default-features = false, features = ["json"] }
 headers = { version = "0.3", optional = true }