diff --git a/sentinel-core/Cargo.toml b/sentinel-core/Cargo.toml
index 82d42fb..54ad850 100644
--- a/sentinel-core/Cargo.toml
+++ b/sentinel-core/Cargo.toml
@@ -61,7 +61,7 @@ lru = "0.7.5"
 etcd-rs = { version = "0.6", optional = true }
 consul = { version = "0.4", optional = true }
 futures = { version = "0.3.17", optional = true }
-base64 = { version = "0.13", optional = true }
+base64 = { version = "0.21", optional = true }
 kube = { version = "0.76", features = ["derive", "runtime"], optional = true }
 k8s-openapi = { version = "0.16.0", default-features = false, features = [
   "v1_25",