diff --git a/Cargo.lock b/Cargo.lock
index ba0ccc9..b5fa2be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -102,7 +102,6 @@ dependencies = [
  "memchr",
  "mimalloc",
  "once_cell",
- "parking_lot",
  "privdrop",
  "quickcheck",
  "quickcheck_macros",
@@ -175,7 +174,6 @@ dependencies = [
  "mimalloc",
  "mio",
  "num-format",
- "parking_lot",
  "quickcheck",
  "quickcheck_macros",
  "rand",
diff --git a/aquatic_http/Cargo.toml b/aquatic_http/Cargo.toml
index 2052f00..027ef84 100644
--- a/aquatic_http/Cargo.toml
+++ b/aquatic_http/Cargo.toml
@@ -30,7 +30,6 @@ itoa = "1"
 log = "0.4"
 mimalloc = { version = "0.1", default-features = false }
 memchr = "2"
-parking_lot = "0.11"
 privdrop = "0.5"
 once_cell = "1"
 rand = { version = "0.8", features = ["small_rng"] }
diff --git a/aquatic_udp/Cargo.toml b/aquatic_udp/Cargo.toml
index 1059b41..d9a9937 100644
--- a/aquatic_udp/Cargo.toml
+++ b/aquatic_udp/Cargo.toml
@@ -29,7 +29,6 @@ log = "0.4"
 mimalloc = { version = "0.1", default-features = false }
 mio = { version = "0.8", features = ["net", "os-poll"] }
 num-format = "0.4"
-parking_lot = "0.11"
 rand = { version = "0.8", features = ["small_rng"] }
 serde = { version = "1", features = ["derive"] }
 slab = "0.4"