diff --git a/metrics-exporter-prometheus/Cargo.toml b/metrics-exporter-prometheus/Cargo.toml
index 16d60188..d383c341 100644
--- a/metrics-exporter-prometheus/Cargo.toml
+++ b/metrics-exporter-prometheus/Cargo.toml
@@ -28,7 +28,7 @@ metrics-util = { version = "^0.16", path = "../metrics-util", default-features =
 thiserror = { version = "1", default-features = false }
 quanta = { version = "0.12", default-features = false }
 indexmap = { version = "2.1", default-features = false, features = ["std"] }
-base64 = { version = "0.21.0", default-features = false, features = ["std"] }
+base64 = { version = "0.22.0", default-features = false, features = ["std"] }
 
 # Optional
 hyper = { version = "0.14", default-features = false, features = ["tcp", "http1"], optional = true }