diff --git a/Cargo.lock b/Cargo.lock
index 439be9e..09d967b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -182,7 +182,7 @@ dependencies = [
  "aes-gcm",
  "aws-nitro-enclaves-cose",
  "aws-nitro-enclaves-nsm-api",
- "base64 0.21.7",
+ "base64 0.22.1",
  "chrono",
  "der 0.7.9",
  "ecdsa 0.16.9",
diff --git a/attestation-doc-validation/Cargo.toml b/attestation-doc-validation/Cargo.toml
index da6bd8b..00e45b3 100644
--- a/attestation-doc-validation/Cargo.toml
+++ b/attestation-doc-validation/Cargo.toml
@@ -18,7 +18,7 @@ aws-nitro-enclaves-cose = { version = "0.5.1", default-features = false }
 thiserror = "1.0"
 serde_cbor = "0.11"
 hex = "0.4.3"
-base64 = "0.21"
+base64 = "0.22"
 serde_bytes = "0.11"
 serde = { version = "1.0.180", features = ["derive"] }
 serde_with = "2.2"
@@ -37,6 +37,6 @@ aws-nitro-enclaves-nsm-api = { version = "^0.4", default-features = false }
 
 [dev-dependencies]
 rcgen = "0.10"
-base64 = "0.21"
+base64 = "0.22"
 serde_json = "1"
 pem = "1.1.1"