diff --git a/full-service/Cargo.toml b/full-service/Cargo.toml
index 6ebb4f2901..44eada86ba 100644
--- a/full-service/Cargo.toml
+++ b/full-service/Cargo.toml
@@ -63,7 +63,7 @@ t3-connection = { path = "../t3/connection" }
 ledger-mob = { path = "../ledger-mob/lib" }
 
 async-trait = "0.1.59"
-base64 = "0.21.5"
+base64 = "0.21.7"
 chrono = { version = "0.4", default-features = false, features = ["alloc"] }
 clap = { version = "4.4", features = ["derive", "env"] }
 crossbeam-channel = "0.5"
diff --git a/signer/Cargo.toml b/signer/Cargo.toml
index b235f07dbd..160d397841 100644
--- a/signer/Cargo.toml
+++ b/signer/Cargo.toml
@@ -31,7 +31,7 @@ mc-util-repr-bytes = { path = "../mobilecoin/util/repr-bytes", default-features
 mc-util-serial = { path = "../mobilecoin/util/serial", default-features = false }
 
 anyhow = "1.0.75"
-base64 = "0.21.5"
+base64 = "0.21.7"
 clap = { version = "4.4", features = [ "derive" ] }
 displaydoc = { version = "0.2", default-features = false }
 hex = { version = "0.4", default-features = false }