diff --git a/Cargo.lock b/Cargo.lock
index 8dc2ee8..7c92b48 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -302,9 +302,9 @@ checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.39"
+version = "1.0.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c54b25569025b7fc9651de43004ae593a75ad88543b17178aa5e1b9c4f15f56f"
+checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
 dependencies = [
  "unicode-ident",
 ]
@@ -410,9 +410,9 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "serde"
-version = "1.0.144"
+version = "1.0.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
+checksum = "3a382c72b4ba118526e187430bb4963cd6d55051ebf13d9b25574d379cc98d20"
 dependencies = [
  "serde_derive",
 ]
@@ -430,9 +430,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.144"
+version = "1.0.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
+checksum = "1ef476a5790f0f6decbc66726b6e5d63680ed518283e64c7df415989d880954f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -484,9 +484,9 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "syn"
-version = "1.0.96"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0748dd251e24453cb8717f0354206b91557e4ec8703673a4b30208f2abaf1ebf"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",