diff --git a/Cargo.lock b/Cargo.lock
index 0fc30c32dba..b5d40c27b28 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1717,6 +1717,15 @@ dependencies = [
  "smallvec 1.8.0",
 ]
 
+[[package]]
+name = "fastrand"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3fcf0cee53519c866c09b5de1f6c56ff9d647101f81c1964fa632e148896cdf"
+dependencies = [
+ "instant",
+]
+
 [[package]]
 name = "fixedbitset"
 version = "0.1.9"
@@ -6510,14 +6519,14 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.1.0"
+version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
+checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
+ "fastrand",
  "libc",
- "rand 0.7.3",
- "redox_syscall 0.1.56",
+ "redox_syscall 0.2.13",
  "remove_dir_all",
  "winapi",
 ]
diff --git a/servo-tidy.toml b/servo-tidy.toml
index 7b4a1d9bf0c..e5bfa190964 100644
--- a/servo-tidy.toml
+++ b/servo-tidy.toml
@@ -20,7 +20,6 @@ rand = [
   "phf_generator",
   "quickcheck", # Only used in tests
   "servo_rand",
-  "tempfile",
   "tungstenite",
   "ws",
 ]