diff --git a/Cargo.lock b/Cargo.lock
index 8c4009b..d76ac6c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1436,7 +1436,7 @@ dependencies = [
  "ipld_blockstore 0.1.1 (git+https://github.com/willeslau/forest?branch=willes/filecoindot)",
  "ipld_hamt",
  "parity-scale-codec",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.0",
  "reqwest",
  "scale-info",
  "serde",
@@ -1521,7 +1521,7 @@ dependencies = [
  "ipld_hamt",
  "num-traits",
  "once_cell",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.0",
  "serde",
  "sha2 0.9.9",
  "thiserror",
@@ -1540,7 +1540,7 @@ dependencies = [
  "jsonrpc-core-client",
  "jsonrpc-derive",
  "parity-scale-codec",
- "parking_lot 0.10.2",
+ "parking_lot 0.12.0",
  "sp-core",
  "sp-offchain",
  "thiserror",
@@ -1559,7 +1559,7 @@ dependencies = [
  "node-template-runtime",
  "orml-nft",
  "pallet-transaction-payment-rpc",
- "parking_lot 0.10.2",
+ "parking_lot 0.12.0",
  "sc-basic-authorship",
  "sc-cli",
  "sc-client-api",
@@ -3557,9 +3557,9 @@ dependencies = [
 
 [[package]]
 name = "lock_api"
-version = "0.4.5"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712a4d093c9976e24e7dbca41db895dabcbac38eb5f4045393d17a95bdfb1109"
+checksum = "88943dd7ef4a2e5a4bfa2753aaab3013e34ce2533d1996fb18ef591e315e2b3b"
 dependencies = [
  "scopeguard",
 ]
@@ -4572,10 +4572,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
 dependencies = [
  "instant",
- "lock_api 0.4.5",
+ "lock_api 0.4.6",
  "parking_lot_core 0.8.5",
 ]
 
+[[package]]
+name = "parking_lot"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87f5ec2493a61ac0506c0f4199f99070cbe83857b0337006a30f3e6719b8ef58"
+dependencies = [
+ "lock_api 0.4.6",
+ "parking_lot_core 0.9.0",
+]
+
 [[package]]
 name = "parking_lot_core"
 version = "0.7.2"
@@ -4604,6 +4614,19 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "parking_lot_core"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2f4f894f3865f6c0e02810fc597300f34dc2510f66400da262d8ae10e75767d"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "redox_syscall 0.2.10",
+ "smallvec",
+ "windows-sys",
+]
+
 [[package]]
 name = "paste"
 version = "1.0.6"
@@ -7765,7 +7788,7 @@ dependencies = [
  "chrono",
  "lazy_static",
  "matchers",
- "parking_lot 0.11.2",
+ "parking_lot 0.10.2",
  "regex",
  "serde",
  "serde_json",
@@ -8474,6 +8497,49 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows-sys"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ceb069ac8b2117d36924190469735767f0990833935ab430155e71a44bafe148"
+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d027175d00b01e0cbeb97d6ab6ebe03b12330a35786cbaca5252b1c4bf5d9b"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8793f59f7b8e8b01eda1a652b2697d87b93097198ae85f823b969ca5b89bba58"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8602f6c418b67024be2996c512f5f995de3ba417f4c75af68401ab8756796ae4"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3d615f419543e0bd7d2b3323af0d86ff19cbc4f816e6453f36a2c2ce889c354"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11d95421d9ed3672c280884da53201a5c46b7b2765ca6faf34b0d71cf34a3561"
+
 [[package]]
 name = "winreg"
 version = "0.6.2"
diff --git a/filecoindot-proofs/Cargo.toml b/filecoindot-proofs/Cargo.toml
index abb817b..0cdcd6a 100644
--- a/filecoindot-proofs/Cargo.toml
+++ b/filecoindot-proofs/Cargo.toml
@@ -11,7 +11,7 @@ serde_bytes = { package = "cs_serde_bytes", version = "0.12" }
 thiserror = "1.0"
 sha2 = "0.9.1"
 once_cell = "1.5"
-parking_lot = "0.11"
+parking_lot = "0.12"
 num-traits = "0.2.14"
 ipld_hamt = { git = "https://github.com/willeslau/forest", branch = "willes/filecoindot" }
 ipld_amt = { git = "https://github.com/willeslau/forest", branch = "willes/filecoindot" }
diff --git a/filecoindot-rpc/Cargo.toml b/filecoindot-rpc/Cargo.toml
index f6fc9d5..c6ee8a3 100644
--- a/filecoindot-rpc/Cargo.toml
+++ b/filecoindot-rpc/Cargo.toml
@@ -16,7 +16,7 @@ jsonrpc-core-client = "18"
 jsonrpc-derive = "18"
 derive_more = "^0.99"
 thiserror = "^1"
-parking_lot = "^0.10"
+parking_lot = "^0.12"
 url = "2.2.2"
 codec = { package = "parity-scale-codec", version = "2.3.1" }
 
diff --git a/filecoindot/Cargo.toml b/filecoindot/Cargo.toml
index 992f29a..e180ee3 100644
--- a/filecoindot/Cargo.toml
+++ b/filecoindot/Cargo.toml
@@ -31,7 +31,7 @@ filecoindot-io = { path = "../filecoindot-io", default-features = false }
 serde = "1.0.130"
 bincode = "1.3.3"
 reqwest = { version = "0.11.9", features = [ "json" ] }
-parking_lot = "0.11"
+parking_lot = "0.12"
 futures = "0.3"
 tokio = { version = "1.14", features = [ "full" ] }
 thiserror = "1.0.30"
diff --git a/substrate-node-example/node/Cargo.toml b/substrate-node-example/node/Cargo.toml
index d51a4d9..1e949ec 100644
--- a/substrate-node-example/node/Cargo.toml
+++ b/substrate-node-example/node/Cargo.toml
@@ -18,7 +18,7 @@ name = "filecoindot-template"
 
 [dependencies]
 structopt = "0.3.25"
-parking_lot = "^0.10"
+parking_lot = "^0.12"
 
 sc-cli = { features = ["wasmtime"], git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.13" }
 sp-core = { git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.13" }