diff --git a/Cargo.lock b/Cargo.lock
index bbea7be..1fec5cc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,14 +1,5 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "ahash"
-version = "0.3.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8fd72866655d1904d6b0997d0b07ba561047d070fbe29de039031c641b61217"
-dependencies = [
- "const-random",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "0.7.15"
@@ -345,28 +336,6 @@ dependencies = [
  "cache-padded",
 ]
 
-[[package]]
-name = "const-random"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f590d95d011aa80b063ffe3253422ed5aa462af4e9867d43ce8337562bac77c4"
-dependencies = [
- "const-random-macro",
- "proc-macro-hack",
-]
-
-[[package]]
-name = "const-random-macro"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "615f6e27d000a2bffbc7f2f6a8669179378fa27ee4d0a509e985dfc0a7defb40"
-dependencies = [
- "getrandom",
- "lazy_static",
- "proc-macro-hack",
- "tiny-keccak",
-]
-
 [[package]]
 name = "constant_time_eq"
 version = "0.1.5"
@@ -389,12 +358,6 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 
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-
 [[package]]
 name = "crypto-mac"
 version = "0.8.0"
@@ -437,12 +400,11 @@ dependencies = [
 
 [[package]]
 name = "dashmap"
-version = "3.11.10"
+version = "4.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f260e2fc850179ef410018660006951c1b55b79e8087e87111a2c388994b9b5"
+checksum = "e77a43b28d0668df09411cb0bc9a8c2adc40f9a048afe863e05fd43251e8e39c"
 dependencies = [
- "ahash",
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "num_cpus",
 ]
 
@@ -2123,15 +2085,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
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-version = "2.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "crunchy",
-]
-
 [[package]]
 name = "tinyvec"
 version = "1.1.1"
diff --git a/crates/ptth_relay/Cargo.toml b/crates/ptth_relay/Cargo.toml
index 4ddc8c2..d02e44d 100644
--- a/crates/ptth_relay/Cargo.toml
+++ b/crates/ptth_relay/Cargo.toml
@@ -12,7 +12,7 @@ base64 = "0.13.0"
 blake3 = "0.3.7"
 chrono = { version = "0.4.19", features = ["serde"] }
 clap = "2.33.3"
-dashmap = "3.11.10"
+dashmap = "4.0.2"
 futures = "0.3.7"
 futures-util = "0.3.8"
 handlebars = "3.5.3"