diff --git a/Cargo.lock b/Cargo.lock
index 0201758e1cb..a6aee984ac4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "account_manager"
 version = "0.3.5"
@@ -33,7 +35,7 @@ dependencies = [
  "slog-term",
  "slot_clock",
  "tempfile",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
  "validator_dir",
 ]
@@ -623,7 +625,7 @@ dependencies = [
  "strum",
  "task_executor",
  "tempfile",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tree_hash",
  "types",
 ]
@@ -662,7 +664,7 @@ dependencies = [
  "slog-term",
  "store",
  "task_executor",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
 ]
 
@@ -861,7 +863,7 @@ dependencies = [
  "slog-stdlog",
  "slog-term",
  "sloggers",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
 ]
 
@@ -1119,7 +1121,7 @@ dependencies = [
  "task_executor",
  "time 0.2.26",
  "timer",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "toml",
  "tree_hash",
  "types",
@@ -1662,7 +1664,7 @@ dependencies = [
  "rlp 0.5.0",
  "sha2 0.9.3",
  "smallvec",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-stream",
  "tokio-util 0.6.6",
  "tracing",
@@ -1694,7 +1696,7 @@ dependencies = [
  "rlp 0.5.0",
  "sha2 0.9.3",
  "smallvec",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-stream",
  "tokio-util 0.6.6",
  "tracing",
@@ -1868,7 +1870,7 @@ dependencies = [
  "slog-term",
  "sloggers",
  "task_executor",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
 ]
 
@@ -1908,7 +1910,7 @@ dependencies = [
  "sloggers",
  "state_processing",
  "task_executor",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-compat-02",
  "toml",
  "tree_hash",
@@ -1923,7 +1925,7 @@ dependencies = [
  "deposit_contract",
  "futures 0.3.14",
  "serde_json",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-compat-02",
  "types",
  "web3",
@@ -2064,7 +2066,7 @@ dependencies = [
  "task_executor",
  "tempfile",
  "tiny-keccak 2.0.2",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-io-timeout",
  "tokio-util 0.6.6",
  "types",
@@ -2544,7 +2546,7 @@ dependencies = [
  "serde_derive",
  "slog",
  "state_processing",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-compat-02",
  "tree_hash",
  "types",
@@ -2674,7 +2676,7 @@ dependencies = [
  "http",
  "indexmap",
  "slab",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-util 0.6.6",
  "tracing",
 ]
@@ -2708,7 +2710,7 @@ name = "hashset_delay"
 version = "0.2.0"
 dependencies = [
  "futures 0.3.14",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-util 0.6.6",
 ]
 
@@ -2876,7 +2878,7 @@ dependencies = [
  "slot_clock",
  "state_processing",
  "store",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-stream",
  "tokio-util 0.6.6",
  "tree_hash",
@@ -2903,7 +2905,7 @@ dependencies = [
  "slog",
  "slot_clock",
  "store",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
  "warp",
  "warp_utils",
@@ -2951,7 +2953,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_regex",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -3002,7 +3004,7 @@ dependencies = [
  "itoa",
  "pin-project 1.0.7",
  "socket2 0.4.0",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tower-service",
  "tracing",
  "want",
@@ -3048,7 +3050,7 @@ dependencies = [
  "bytes 1.0.1",
  "hyper 0.14.7",
  "native-tls",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-native-tls",
 ]
 
@@ -3380,7 +3382,7 @@ dependencies = [
  "serde_yaml",
  "simple_logger",
  "state_processing",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tree_hash",
  "types",
  "validator_dir",
@@ -3654,7 +3656,7 @@ dependencies = [
  "libp2p-core",
  "log",
  "socket2 0.3.19",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -3758,7 +3760,7 @@ dependencies = [
  "sloggers",
  "task_executor",
  "tempfile",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
  "validator_client",
  "validator_dir",
@@ -4067,7 +4069,7 @@ dependencies = [
  "slog",
  "store",
  "task_executor",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -4204,7 +4206,7 @@ dependencies = [
  "strum",
  "task_executor",
  "tempfile",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-stream",
  "tokio-util 0.6.6",
  "tree_hash",
@@ -5231,7 +5233,7 @@ dependencies = [
  "reqwest",
  "sensitive_url",
  "serde",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
 ]
 
@@ -5250,7 +5252,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tempfile",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
  "winapi 0.3.9",
  "windows-acl",
@@ -5291,7 +5293,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-native-tls",
  "url",
  "wasm-bindgen",
@@ -5828,7 +5830,7 @@ dependencies = [
  "parking_lot",
  "rayon",
  "sensitive_url",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
  "validator_client",
 ]
@@ -5887,7 +5889,7 @@ dependencies = [
  "slot_clock",
  "state_processing",
  "task_executor",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-stream",
  "types",
 ]
@@ -6345,7 +6347,7 @@ dependencies = [
  "lazy_static",
  "lighthouse_metrics",
  "slog",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -6506,7 +6508,7 @@ dependencies = [
  "slog",
  "slot_clock",
  "task_executor",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
 ]
 
@@ -6608,9 +6610,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.5.0"
+version = "1.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83f0c8e7c0addab50b663055baf787d0af7f413a46e6e7fb9559a4e4db7137a5"
+checksum = "50dae83881bc9b0403dd5b44ea9deed3e939856cc8722d5be37f0d6e5c6d53dd"
 dependencies = [
  "autocfg 1.0.1",
  "bytes 1.0.1",
@@ -6646,7 +6648,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90c49f106be240de154571dd31fbe48acb10ba6c6dd6f6517ad603abffa42de9"
 dependencies = [
  "pin-project-lite 0.2.6",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -6678,7 +6680,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7d995660bd2b7f8c1568414c1126076c13fbb725c40112dc0120b78eb9b717b"
 dependencies = [
  "native-tls",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -6689,7 +6691,7 @@ checksum = "e177a5d8c3bf36de9ebe6d58537d8879e964332f93fb3339e43f618c81361af0"
 dependencies = [
  "futures-core",
  "pin-project-lite 0.2.6",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-util 0.6.6",
 ]
 
@@ -6712,7 +6714,7 @@ dependencies = [
  "futures-util",
  "log",
  "pin-project 1.0.7",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tungstenite",
 ]
 
@@ -6758,7 +6760,7 @@ dependencies = [
  "log",
  "pin-project-lite 0.2.6",
  "slab",
- "tokio 1.5.0",
+ "tokio 1.8.4",
 ]
 
 [[package]]
@@ -7188,7 +7190,7 @@ dependencies = [
  "slog-term",
  "slot_clock",
  "tempfile",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tree_hash",
  "types",
  "validator_dir",
@@ -7295,7 +7297,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "tokio-stream",
  "tokio-tungstenite",
  "tokio-util 0.6.6",
@@ -7316,7 +7318,7 @@ dependencies = [
  "safe_arith",
  "serde",
  "state_processing",
- "tokio 1.5.0",
+ "tokio 1.8.4",
  "types",
  "warp",
 ]
diff --git a/account_manager/Cargo.toml b/account_manager/Cargo.toml
index 4986151c038..77c51f5e61b 100644
--- a/account_manager/Cargo.toml
+++ b/account_manager/Cargo.toml
@@ -27,7 +27,7 @@ eth2_wallet = { path = "../crypto/eth2_wallet" }
 eth2_wallet_manager = { path = "../common/eth2_wallet_manager" }
 rand = "0.7.3"
 validator_dir = { path = "../common/validator_dir" }
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 eth2_keystore = { path = "../crypto/eth2_keystore" }
 account_utils = { path = "../common/account_utils" }
 slashing_protection = { path = "../validator_client/slashing_protection" }
diff --git a/beacon_node/Cargo.toml b/beacon_node/Cargo.toml
index f170ee86f51..f911988b589 100644
--- a/beacon_node/Cargo.toml
+++ b/beacon_node/Cargo.toml
@@ -26,7 +26,7 @@ slog = { version = "2.5.2", features = ["max_level_trace", "release_max_level_tr
 slog-term = "2.6.0"
 slog-async = "2.5.0"
 ctrlc = { version = "3.1.6", features = ["termination"] }
-tokio = { version = "1.1.0", features = ["time"] }
+tokio = { version = "1.8.4", features = ["time"] }
 exit-future = "0.2.0"
 dirs = "3.0.1"
 logging = { path = "../common/logging" }
diff --git a/beacon_node/beacon_chain/Cargo.toml b/beacon_node/beacon_chain/Cargo.toml
index 930820b7f66..75b93a6dca8 100644
--- a/beacon_node/beacon_chain/Cargo.toml
+++ b/beacon_node/beacon_chain/Cargo.toml
@@ -40,7 +40,7 @@ eth2_ssz_derive = "0.1.0"
 state_processing = { path = "../../consensus/state_processing" }
 tree_hash = "0.1.1"
 types = { path = "../../consensus/types" }
-tokio = "1.1.0"
+tokio = "1.8.4"
 eth1 = { path = "../eth1" }
 futures = "0.3.7"
 genesis = { path = "../genesis" }
diff --git a/beacon_node/client/Cargo.toml b/beacon_node/client/Cargo.toml
index 3e67624461d..e5f2cd05481 100644
--- a/beacon_node/client/Cargo.toml
+++ b/beacon_node/client/Cargo.toml
@@ -26,7 +26,7 @@ error-chain = "0.12.4"
 serde_yaml = "0.8.13"
 slog = { version = "2.5.2", features = ["max_level_trace"] }
 slog-async = "2.5.0"
-tokio = "1.1.0"
+tokio = "1.8.4"
 dirs = "3.0.1"
 futures = "0.3.7"
 reqwest = { version = "0.11.0", features = ["native-tls-vendored"] }
diff --git a/beacon_node/eth1/Cargo.toml b/beacon_node/eth1/Cargo.toml
index 618b59676af..0dc225ee6fb 100644
--- a/beacon_node/eth1/Cargo.toml
+++ b/beacon_node/eth1/Cargo.toml
@@ -26,7 +26,7 @@ tree_hash = "0.1.1"
 eth2_hashing = "0.1.0"
 parking_lot = "0.11.0"
 slog = "2.5.2"
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 state_processing = { path = "../../consensus/state_processing" }
 libflate = "1.0.2"
 lighthouse_metrics = { path = "../../common/lighthouse_metrics"}
diff --git a/beacon_node/eth2_libp2p/Cargo.toml b/beacon_node/eth2_libp2p/Cargo.toml
index dfa2d634fd6..f430859d6ab 100644
--- a/beacon_node/eth2_libp2p/Cargo.toml
+++ b/beacon_node/eth2_libp2p/Cargo.toml
@@ -16,7 +16,7 @@ eth2_ssz = "0.1.2"
 eth2_ssz_derive = "0.1.0"
 slog = { version = "2.5.2", features = ["max_level_trace"] }
 lighthouse_version = { path = "../../common/lighthouse_version" }
-tokio = { version = "1.1.0", features = ["time", "macros"] }
+tokio = { version = "1.8.4", features = ["time", "macros"] }
 futures = "0.3.7"
 futures-io = "0.3.7"
 error-chain = "0.12.4"
@@ -47,7 +47,7 @@ default-features = false
 features = ["websocket", "identify", "mplex", "yamux", "noise", "gossipsub", "dns", "tcp-tokio"]
 
 [dev-dependencies]
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 slog-term = "2.6.0"
 slog-async = "2.5.0"
 tempfile = "3.1.0"
diff --git a/beacon_node/http_api/Cargo.toml b/beacon_node/http_api/Cargo.toml
index 606fd7247c3..0c4b7835e63 100644
--- a/beacon_node/http_api/Cargo.toml
+++ b/beacon_node/http_api/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 warp = { git = "https://github.com/paulhauner/warp ", branch = "cors-wildcard" }
 serde = { version = "1.0.116", features = ["derive"] }
-tokio = { version = "1.1.0", features = ["macros","sync"] }
+tokio = { version = "1.8.4", features = ["macros","sync"] }
 tokio-stream = { version = "0.1.3", features = ["sync"] }
 tokio-util = "0.6.3"
 parking_lot = "0.11.0"
diff --git a/beacon_node/http_metrics/Cargo.toml b/beacon_node/http_metrics/Cargo.toml
index e1746781bf1..dd5ffa47d74 100644
--- a/beacon_node/http_metrics/Cargo.toml
+++ b/beacon_node/http_metrics/Cargo.toml
@@ -23,7 +23,7 @@ warp_utils = { path = "../../common/warp_utils" }
 malloc_utils = { path = "../../common/malloc_utils" }
 
 [dev-dependencies]
-tokio = { version = "1.1.0", features = ["sync"] }
+tokio = { version = "1.8.4", features = ["sync"] }
 reqwest = { version = "0.11.0", features = ["json"] }
 environment = { path = "../../lighthouse/environment" }
 types = { path = "../../consensus/types" }
diff --git a/beacon_node/network/Cargo.toml b/beacon_node/network/Cargo.toml
index 0f0fad35b7e..2991a02f404 100644
--- a/beacon_node/network/Cargo.toml
+++ b/beacon_node/network/Cargo.toml
@@ -32,7 +32,7 @@ eth2_ssz_types = { path =  "../../consensus/ssz_types" }
 tree_hash = "0.1.1"
 futures = "0.3.7"
 error-chain = "0.12.4"
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 tokio-stream = "0.1.3"
 parking_lot = "0.11.0"
 smallvec = "1.6.1"
diff --git a/beacon_node/timer/Cargo.toml b/beacon_node/timer/Cargo.toml
index d45a214b388..60eff216d0e 100644
--- a/beacon_node/timer/Cargo.toml
+++ b/beacon_node/timer/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 beacon_chain =  { path = "../beacon_chain" }
 types = { path = "../../consensus/types" }
 slot_clock = { path = "../../common/slot_clock" }
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 slog = "2.5.2"
 parking_lot = "0.11.0"
 futures = "0.3.7"
diff --git a/boot_node/Cargo.toml b/boot_node/Cargo.toml
index 897fa2f3bc0..c26d79e85b7 100644
--- a/boot_node/Cargo.toml
+++ b/boot_node/Cargo.toml
@@ -13,7 +13,7 @@ eth2_network_config = { path = "../common/eth2_network_config" }
 eth2_ssz = "0.1.2"
 slog = "2.5.2"
 sloggers = "1.0.1"
-tokio = "1.1.0"
+tokio = "1.8.4"
 log = "0.4.11"
 slog-term = "2.6.0"
 logging = { path = "../common/logging" }
diff --git a/common/hashset_delay/Cargo.toml b/common/hashset_delay/Cargo.toml
index 80e5e9e2b6e..cea7f4e2209 100644
--- a/common/hashset_delay/Cargo.toml
+++ b/common/hashset_delay/Cargo.toml
@@ -9,4 +9,4 @@ futures = "0.3.7"
 tokio-util = { version = "0.6.2", features = ["time"] }
 
 [dev-dependencies]
-tokio = { version = "1.1.0", features = ["time", "rt-multi-thread", "macros"] }
+tokio = { version = "1.8.4", features = ["time", "rt-multi-thread", "macros"] }
diff --git a/common/monitoring_api/Cargo.toml b/common/monitoring_api/Cargo.toml
index 79284475bce..805e16420fd 100644
--- a/common/monitoring_api/Cargo.toml
+++ b/common/monitoring_api/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2018"
 reqwest = { version = "0.11.0", features = ["json","stream"] }
 futures = "0.3.7"
 task_executor = { path = "../task_executor" }
-tokio = "1.1.0"
+tokio = "1.8.4"
 eth2 = {path = "../eth2"}
 serde_json = "1.0.58"
 serde = "1.0.116"
diff --git a/common/remote_signer_consumer/Cargo.toml b/common/remote_signer_consumer/Cargo.toml
index bda6264c621..c620113def7 100644
--- a/common/remote_signer_consumer/Cargo.toml
+++ b/common/remote_signer_consumer/Cargo.toml
@@ -11,6 +11,6 @@ remote_signer_test = { path = "../../testing/remote_signer_test" }
 [dependencies]
 reqwest = { version = "0.11.0", features = ["json"] }
 serde = { version = "1.0.116", features = ["derive"] }
-tokio = { version = "1.1.0", features = ["time"] }
+tokio = { version = "1.8.4", features = ["time"] }
 types = { path = "../../consensus/types" }
 sensitive_url = { path = "../sensitive_url" }
diff --git a/common/task_executor/Cargo.toml b/common/task_executor/Cargo.toml
index 5f142522c52..26e90ddd718 100644
--- a/common/task_executor/Cargo.toml
+++ b/common/task_executor/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Sigma Prime <contact@sigmaprime.io>"]
 edition = "2018"
 
 [dependencies]
-tokio = { version = "1.1.0", features = ["rt"] }
+tokio = { version = "1.8.4", features = ["rt"] }
 slog = "2.5.2"
 futures = "0.3.7"
 exit-future = "0.2.0"
diff --git a/common/warp_utils/Cargo.toml b/common/warp_utils/Cargo.toml
index 7b2ab637398..b8269a82a96 100644
--- a/common/warp_utils/Cargo.toml
+++ b/common/warp_utils/Cargo.toml
@@ -14,7 +14,7 @@ beacon_chain = { path = "../../beacon_node/beacon_chain" }
 state_processing = { path = "../../consensus/state_processing" }
 safe_arith = { path = "../../consensus/safe_arith" }
 serde = { version = "1.0.116", features = ["derive"] }
-tokio = { version = "1.1.0", features = ["sync"] }
+tokio = { version = "1.8.4", features = ["sync"] }
 headers = "0.3.2"
 lighthouse_metrics = { path = "../lighthouse_metrics" }
 lazy_static = "1.4.0"
diff --git a/lcli/Cargo.toml b/lcli/Cargo.toml
index 56d8b615610..8e99ee08cdd 100644
--- a/lcli/Cargo.toml
+++ b/lcli/Cargo.toml
@@ -27,7 +27,7 @@ dirs = "3.0.1"
 genesis = { path = "../beacon_node/genesis" }
 deposit_contract = { path = "../common/deposit_contract" }
 tree_hash = "0.1.1"
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 clap_utils = { path = "../common/clap_utils" }
 eth2_libp2p = { path = "../beacon_node/eth2_libp2p" }
 validator_dir = { path = "../common/validator_dir", features = ["insecure_keys"] }
diff --git a/lighthouse/Cargo.toml b/lighthouse/Cargo.toml
index 7746d58956c..19489c9e8b6 100644
--- a/lighthouse/Cargo.toml
+++ b/lighthouse/Cargo.toml
@@ -21,7 +21,7 @@ spec-v12 = []
 
 [dependencies]
 beacon_node = { "path" = "../beacon_node" }
-tokio = "1.1.0"
+tokio = "1.8.4"
 slog = { version = "2.5.2", features = ["max_level_trace"] }
 sloggers = "1.0.1"
 types = { "path" = "../consensus/types" }
diff --git a/lighthouse/environment/Cargo.toml b/lighthouse/environment/Cargo.toml
index 6e0556a6d2d..b535cf0ddb1 100644
--- a/lighthouse/environment/Cargo.toml
+++ b/lighthouse/environment/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dependencies]
-tokio = { version = "1.1.0", features = ["macros", "rt", "rt-multi-thread" ] }
+tokio = { version = "1.8.4", features = ["macros", "rt", "rt-multi-thread" ] }
 slog = { version = "2.5.2", features = ["max_level_trace"] }
 sloggers = "1.0.1"
 types = { "path" = "../../consensus/types" }
diff --git a/slasher/service/Cargo.toml b/slasher/service/Cargo.toml
index 0c43ed11371..bf06fc1e592 100644
--- a/slasher/service/Cargo.toml
+++ b/slasher/service/Cargo.toml
@@ -14,6 +14,6 @@ slog = "2.5.2"
 slot_clock = { path = "../../common/slot_clock" }
 state_processing = { path = "../../consensus/state_processing" }
 task_executor = { path = "../../common/task_executor" }
-tokio = { version = "1.1.0", features = ["full"] }
+tokio = { version = "1.8.4", features = ["full"] }
 tokio-stream = "0.1.3"
 types = { path = "../../consensus/types" }
diff --git a/testing/eth1_test_rig/Cargo.toml b/testing/eth1_test_rig/Cargo.toml
index 7f0ad6daf9f..4429497beeb 100644
--- a/testing/eth1_test_rig/Cargo.toml
+++ b/testing/eth1_test_rig/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dependencies]
-tokio = { version = "1.1.0", features = ["time"] }
+tokio = { version = "1.8.4", features = ["time"] }
 tokio-compat-02 = "0.1"
 web3 = "0.14.0"
 futures = "0.3.7"
diff --git a/testing/remote_signer_test/Cargo.toml b/testing/remote_signer_test/Cargo.toml
index e6a75c66947..b736587ba7c 100644
--- a/testing/remote_signer_test/Cargo.toml
+++ b/testing/remote_signer_test/Cargo.toml
@@ -15,7 +15,7 @@ reqwest = { version = "0.11.0", features = ["blocking", "json"] }
 serde = { version = "1.0.116", features = ["derive"] }
 serde_json = "1.0.58"
 tempfile = "3.1.0"
-tokio = { version = "1.1.0", features = ["time"] }
+tokio = { version = "1.8.4", features = ["time"] }
 types = { path = "../../consensus/types" }
 sensitive_url = { path = "../../common/sensitive_url" }
 
diff --git a/testing/simulator/Cargo.toml b/testing/simulator/Cargo.toml
index 6733ee6327c..d64349cf88a 100644
--- a/testing/simulator/Cargo.toml
+++ b/testing/simulator/Cargo.toml
@@ -13,7 +13,7 @@ types = { path = "../../consensus/types" }
 validator_client = { path = "../../validator_client" }
 parking_lot = "0.11.0"
 futures = "0.3.7"
-tokio = "1.1.0"
+tokio = "1.8.4"
 eth1_test_rig = { path = "../eth1_test_rig" }
 env_logger = "0.8.2"
 clap = "2.33.3"
diff --git a/validator_client/Cargo.toml b/validator_client/Cargo.toml
index df74a203a45..e6c64a9974d 100644
--- a/validator_client/Cargo.toml
+++ b/validator_client/Cargo.toml
@@ -9,7 +9,7 @@ name = "validator_client"
 path = "src/lib.rs"
 
 [dev-dependencies]
-tokio = { version = "1.1.0", features = ["time", "rt-multi-thread", "macros"] }
+tokio = { version = "1.8.4", features = ["time", "rt-multi-thread", "macros"] }
 deposit_contract = { path = "../common/deposit_contract" }
 
 [dependencies]
@@ -30,7 +30,7 @@ serde_yaml = "0.8.13"
 slog = { version = "2.5.2", features = ["max_level_trace", "release_max_level_trace"] }
 slog-async = "2.5.0"
 slog-term = "2.6.0"
-tokio = { version = "1.1.0", features = ["time"] }
+tokio = { version = "1.8.4", features = ["time"] }
 futures = "0.3.7"
 dirs = "3.0.1"
 directory = { path = "../common/directory" }