diff --git a/Cargo.lock b/Cargo.lock
index 904e6a97..73dd88ac 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -775,7 +775,7 @@ checksum = "0c122a393ea57648015bf06fbd3d372378992e86b9ff5a7a497b076a28c79efe"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.57",
  "winapi",
 ]
 
@@ -1804,6 +1804,15 @@ version = "0.1.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05ec8ca9416c5ea37062b502703cd7fcb207736bc294f6e0cf367ac6fc234570"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.4.3"
@@ -2181,20 +2190,20 @@ checksum = "489997b7557e9a43e192c527face4feacc78bfbe6eed67fd55c4c9e381cba290"
 dependencies = [
  "filetime",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.57",
  "xattr",
 ]
 
 [[package]]
 name = "tempfile"
-version = "3.1.0"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
+checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "libc",
- "rand 0.7.3",
- "redox_syscall",
+ "rand 0.8.1",
+ "redox_syscall 0.2.4",
  "remove_dir_all",
  "winapi",
 ]
diff --git a/ethers-signers/Cargo.toml b/ethers-signers/Cargo.toml
index 86fede91..a7b8378d 100644
--- a/ethers-signers/Cargo.toml
+++ b/ethers-signers/Cargo.toml
@@ -33,7 +33,7 @@ futures-executor = "0.3.8"
 ethers = { version = "0.1.3", path = "../ethers" }
 yubihsm = { version = "0.37.0", features = ["secp256k1", "usb", "mockhsm"] }
 
-tempfile = "3.1.0"
+tempfile = "3.2.0"
 tokio = { version = "1.0", default-features = false, features = ["macros"] }
 serde_json = { version = "1.0.55", default-features = false }