diff --git a/Cargo.lock b/Cargo.lock
index 20bff28a3..bf0a5c1b6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -998,13 +998,12 @@ dependencies = [
 
 [[package]]
 name = "dashmap"
-version = "5.1.0"
+version = "4.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0834a35a3fce649144119e18da2a4d8ed12ef3862f47183fd46f625d072d96c"
+checksum = "e77a43b28d0668df09411cb0bc9a8c2adc40f9a048afe863e05fd43251e8e39c"
 dependencies = [
  "cfg-if 1.0.0",
  "num_cpus",
- "parking_lot 0.12.0",
  "rayon",
 ]
 
diff --git a/core/Cargo.toml b/core/Cargo.toml
index b0651c20d..211e6468d 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -20,7 +20,7 @@ bincode = "1.3.3"
 bs58 = "0.4.0"
 chrono = { version = "0.4.11", features = ["serde"] }
 crossbeam-channel = "0.5"
-dashmap = { version = "5.1.0", features = ["rayon", "raw-api"] }
+dashmap = { version = "4.0.2", features = ["rayon", "raw-api"] }
 etcd-client = { version = "0.8.4", features = ["tls"]}
 fs_extra = "1.2.0"
 histogram = "0.6.9"
diff --git a/ledger-tool/Cargo.toml b/ledger-tool/Cargo.toml
index b6f990805..6f4a7b90d 100644
--- a/ledger-tool/Cargo.toml
+++ b/ledger-tool/Cargo.toml
@@ -14,7 +14,7 @@ bs58 = "0.4.0"
 clap = "2.33.1"
 crossbeam-channel = "0.5"
 csv = "1.1.6"
-dashmap = "5.1.0"
+dashmap = "4.0.2"
 histogram = "*"
 itertools = "0.10.3"
 log = { version = "0.4.14" }
diff --git a/programs/bpf/Cargo.lock b/programs/bpf/Cargo.lock
index 3d8037159..ce4f651bc 100644
--- a/programs/bpf/Cargo.lock
+++ b/programs/bpf/Cargo.lock
@@ -666,13 +666,12 @@ dependencies = [
 
 [[package]]
 name = "dashmap"
-version = "5.1.0"
+version = "4.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0834a35a3fce649144119e18da2a4d8ed12ef3862f47183fd46f625d072d96c"
+checksum = "e77a43b28d0668df09411cb0bc9a8c2adc40f9a048afe863e05fd43251e8e39c"
 dependencies = [
  "cfg-if 1.0.0",
  "num_cpus",
- "parking_lot",
  "rayon",
 ]
 
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index 77fb1bf36..c57a6996b 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -14,7 +14,7 @@ base64 = "0.12.3"
 bincode = "1.3.3"
 bs58 = "0.4.0"
 crossbeam-channel = "0.5"
-dashmap = "5.1.0"
+dashmap = "4.0.2"
 itertools = "0.10.3"
 jsonrpc-core = "18.0.0"
 jsonrpc-core-client = { version = "18.0.0" }
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index bd34b8e11..be18f0ae1 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -17,7 +17,7 @@ bv = { version = "0.11.1", features = ["serde"] }
 bytemuck = "1.8.0"
 byteorder = "1.4.3"
 bzip2 = "0.4.3"
-dashmap = { version = "5.1.0", features = ["rayon", "raw-api"] }
+dashmap = { version = "4.0.2", features = ["rayon", "raw-api"] }
 crossbeam-channel = "0.5"
 dir-diff = "0.3.2"
 flate2 = "1.0.22"