diff --git a/Cargo.lock b/Cargo.lock
index daf2abd983f..8ec7662adcf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -810,9 +810,9 @@ checksum = "d193d69bae983fc11a79df82342761dfbf28a99fc8d203dca4c3c1b590948965"
 
 [[package]]
 name = "serde_derive"
-version = "1.0.147"
+version = "1.0.156"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f1d362ca8fc9c3e3a7484440752472d68a6caa98f1ab81d99b5dfe517cec852"
+checksum = "d7e29c4601e36bcec74a223228dce795f4cd3616341a4af93520ca1a837c087d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -863,9 +863,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.102"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fcd952facd492f9be3ef0d0b7032a6e442ee9b361d4acc2b1d0c4aaa5f613a1"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index e2d6fe51b5a..a80974ee787 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ authors = ["Pietro Albini <pietro@pietroalbini.org>"]
 failure = "0.1.5"
 reqwest = { version = "0.11.12", features = ["blocking", "json"] }
 serde = "1.0.147"
-serde_derive = "1.0.147"
+serde_derive = "1.0.156"
 serde_json = "1.0.87"
 log = "0.4.6"
 env_logger = "0.9.1"