diff --git a/Cargo.lock b/Cargo.lock
index 0d5ed510c..801dfca1b 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"
@@ -202,26 +193,6 @@ dependencies = [
  "bitflags",
 ]
 
-[[package]]
-name = "const-random"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f1af9ac737b2dd2d577701e59fd09ba34822f6f2ebdb30a7647405d9e55e16a"
-dependencies = [
- "const-random-macro",
- "proc-macro-hack",
-]
-
-[[package]]
-name = "const-random-macro"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25e4c606eb459dd29f7c57b2e0879f2b6f14ee130918c2b78ccb58a9624e6c7a"
-dependencies = [
- "getrandom 0.1.14",
- "proc-macro-hack",
-]
-
 [[package]]
 name = "const_fn"
 version = "0.4.2"
@@ -294,12 +265,11 @@ dependencies = [
 
 [[package]]
 name = "dashmap"
-version = "3.11.10"
+version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f260e2fc850179ef410018660006951c1b55b79e8087e87111a2c388994b9b5"
+checksum = "4b937cd1fbd1f194ac842196bd2529f21618088ee6d8bff6a46ece611451c96b"
 dependencies = [
- "ahash",
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "num_cpus",
  "serde",
 ]
@@ -819,12 +789,6 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "237a5ed80e274dbc66f86bd59c1e25edc039660be53194b5fe0a482e0f2612ea"
 
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e0456befd48169b9f13ef0f0ad46d492cf9d2dbb918bcf38e01eed4ce3ec5e4"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.18"
diff --git a/Cargo.toml b/Cargo.toml
index 1f1ccb9ff..f90701572 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,7 +42,7 @@ serde = { version = "1.0.118", features = ["derive", "rc"] }
 term_size = "0.3.2"
 toml = "0.5.8"
 parking_lot = "0.11.1"
-dashmap = { version = "3.11.10", features = ["serde"] }
+dashmap = { version = "4.0.1", features = ["serde"] }
 num-format = "0.4.0"
 once_cell = "1.5.2"
 regex = "1.4.3"