diff --git a/Cargo.lock b/Cargo.lock
index d0d629011..8cbd394a8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2066,18 +2066,18 @@ checksum = "58bc9567378fc7690d6b2addae4e60ac2eeea07becb2c64b9f218b53865cba2a"
 
 [[package]]
 name = "serde"
-version = "1.0.197"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fb1c873e1b9b056a4dc4c0c198b24c3ffa059243875552b2bd0933b1aee4ce2"
+checksum = "ddc6f9cc94d67c0e21aaf7eda3a010fd3af78ebf6e096aa6e2e13c79749cce4f"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.197"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
+checksum = "856f046b9400cee3c8c94ed572ecdb752444c24528c035cd35882aad6f492bcb"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 25a7b1b4f..e52ed6bff 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -23,7 +23,7 @@ digest = "^0.10.7"
 hkdf = "^0.12.4"
 lazy_static = "^1.4"
 rand = "^0.8"
-serde = { version = "^1.0.197", features = ["derive"], optional = true }
+serde = { version = "^1.0.200", features = ["derive"], optional = true }
 serde_json = { version = "^1.0.116", optional = true }
 sha-1 = "^0.10.1"
 sha2 = "^0.10.8"
diff --git a/proto/Cargo.toml b/proto/Cargo.toml
index f5dab72f3..667d95a77 100644
--- a/proto/Cargo.toml
+++ b/proto/Cargo.toml
@@ -19,7 +19,7 @@ json = ["base64", "serde"]
 [dependencies]
 base64 = { version = "^0.21", optional = true }
 prost = "^0.11"
-serde = { version = "^1.0.197", features = ["derive"], optional = true }
+serde = { version = "^1.0.200", features = ["derive"], optional = true }
 
 [build-dependencies]
 prost-build = "^0.11"
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 8a69540b2..f66ea556d 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -18,7 +18,7 @@ hex = "^0.4.3"
 p256 = { version = "^0.13.2", features = ["ecdsa", "pkcs8"] }
 rand = "^0.8"
 regex = "^1.10.4"
-serde = { version = "^1.0.197", features = ["derive"] }
+serde = { version = "^1.0.200", features = ["derive"] }
 serde_json = "^1.0.116"
 tink-core = { version = "^0.2", features = ["insecure", "json"] }
 tink-aead = "^0.2"