diff --git a/Cargo.lock b/Cargo.lock
index 57472c8..3597384 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1668,9 +1668,9 @@ dependencies = [
 
 [[package]]
 name = "num-bigint-dig"
-version = "0.8.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "566d173b2f9406afbc5510a90925d5a2cd80cae4605631f1212303df265de011"
+checksum = "2399c9463abc5f909349d8aa9ba080e0b88b3ce2885389b60b993f39b1a56905"
 dependencies = [
  "byteorder",
  "lazy_static",
@@ -2490,9 +2490,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.87"
+version = "1.0.88"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ce777b7b150d76b9cf60d28b55f5847135a003f7d7350c6be7a773508ce7d45"
+checksum = "8e8b3801309262e8184d9687fb697586833e939767aea0dda89f5a8e650e8bd7"
 dependencies = [
  "itoa",
  "ryu",
@@ -2879,9 +2879,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.21.2"
+version = "1.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9e03c497dc955702ba729190dc4aac6f2a0ce97f913e5b1b5912fc5039d9099"
+checksum = "d76ce4a75fb488c605c54bf610f221cea8b0dafb53333c1a67e8ee199dcd2ae3"
 dependencies = [
  "autocfg",
  "bytes",