diff --git a/Cargo.lock b/Cargo.lock
index 0c8ccc8..5bcd777 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1184,9 +1184,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec"
-version = "3.4.0"
+version = "3.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "637935964ff85a605d114591d4d2c13c5d1ba2806dae97cea6bf180238a749ac"
+checksum = "756d439303e94fae44f288ba881ad29670c65b0c4b0e05674ca81061bb65f2c5"
 dependencies = [
  "arrayvec",
  "bitvec",
@@ -1198,9 +1198,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec-derive"
-version = "3.1.4"
+version = "3.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b26a931f824dd4eca30b3e43bb4f31cd5f0d3a403c5f5ff27106b805bfde7b"
+checksum = "9d884d78fcf214d70b1e239fcd1c6e5e95aa3be1881918da2e488cc946c7a476"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -1821,18 +1821,18 @@ checksum = "bebd363326d05ec3e2f532ab7660680f3b02130d780c299bca73469d521bc0ed"
 
 [[package]]
 name = "serde"
-version = "1.0.163"
+version = "1.0.171"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2113ab51b87a539ae008b5c6c02dc020ffa39afd2d83cffcb3f4eb2722cebec2"
+checksum = "30e27d1e4fd7659406c492fd6cfaf2066ba8773de45ca75e855590f856dc34a9"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.163"
+version = "1.0.171"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c805777e3930c8883389c602315a24224bcc738b63905ef87cd1420353ea93e"
+checksum = "389894603bd18c46fa56231694f8d827779c0951a667087194cf9de94ed24682"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 3088f7f..0171f77 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,7 +34,7 @@ bytes = { version = "1.1", optional = true }
 derive_more = "0.99.17"
 fastrlp = { version = "0.3.1", optional = true }
 num-bigint = { version = "0.4.3", optional = true }
-parity-scale-codec = { version = "3.2.1", optional = true, features = ["max-encoded-len"] }
+parity-scale-codec = { version = "3.6.3", optional = true, features = ["max-encoded-len"] }
 postgres-types = { version = "0.2.3", optional = true }
 primitive-types = { version = "<1", optional = true }
 proptest = { version = "1.0", optional = true }