diff --git a/Cargo.lock b/Cargo.lock
index 1c34bc33..f476cf6a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1180,9 +1180,9 @@ checksum = "1847abb9cb65d566acd5942e94aea9c8f547ad02c98e1649326fc0e8910b8b1e"
 
 [[package]]
 name = "futures"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a12aa0eb539080d55c3f2d45a67c3b58b6b0773c1a3ca2dfec66d58c97fd66ca"
+checksum = "8cd0210d8c325c245ff06fd95a3b13689a1a276ac8cfa8e8720cb840bfb84b9e"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1195,9 +1195,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5da6ba8c3bb3c165d3c7319fc1cc8304facf1fb8db99c5de877183c08a273888"
+checksum = "7fc8cd39e3dbf865f7340dce6a2d401d24fd37c6fe6c4f0ee0de8bfca2252d27"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -1205,15 +1205,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88d1c26957f23603395cd326b0ffe64124b818f4449552f960d815cfba83a53d"
+checksum = "629316e42fe7c2a0b9a65b47d159ceaa5453ab14e8f0a3c5eedbb8cd55b4a445"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45025be030969d763025784f7f355043dc6bc74093e4ecc5000ca4dc50d8745c"
+checksum = "7b808bf53348a36cab739d7e04755909b9fcaaa69b7d7e588b37b6ec62704c97"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -1222,18 +1222,16 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "522de2a0fe3e380f1bc577ba0474108faf3f6b18321dbf60b3b9c39a75073377"
+checksum = "e481354db6b5c353246ccf6a728b0c5511d752c08da7260546fc0933869daa11"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18e4a4b95cea4b4ccbcf1c5675ca7c4ee4e9e75eb79944d07defde18068f79bb"
+checksum = "a89f17b21645bc4ed773c69af9c9a0effd4a3f1a3876eadd453469f8854e7fdd"
 dependencies = [
- "autocfg",
- "proc-macro-hack",
  "proc-macro2 1.0.24",
  "quote 1.0.7",
  "syn 1.0.60",
@@ -1241,23 +1239,22 @@ dependencies = [
 
 [[package]]
 name = "futures-sink"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36ea153c13024fe480590b3e3d4cad89a0cfacecc24577b68f86c6ced9c2bc11"
+checksum = "996c6442437b62d21a32cd9906f9c41e7dc1e19a9579843fad948696769305af"
 
 [[package]]
 name = "futures-task"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d3d00f4eddb73e498a54394f228cd55853bdf059259e8e7bc6e69d408892e99"
+checksum = "dabf1872aaab32c886832f2276d2f5399887e2bd613698a02359e4ea83f8de12"
 
 [[package]]
 name = "futures-util"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36568465210a3a6ee45e1f165136d68671471a501e632e9a98d96872222b5481"
+checksum = "41d22213122356472061ac0f1ab2cee28d2bac8491410fd68c2af53d1cedb83e"
 dependencies = [
- "autocfg",
  "futures-channel",
  "futures-core",
  "futures-io",
@@ -1267,8 +1264,6 @@ dependencies = [
  "memchr",
  "pin-project-lite",
  "pin-utils",
- "proc-macro-hack",
- "proc-macro-nested",
  "slab",
 ]
 
@@ -2423,12 +2418,6 @@ version = "0.5.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
-[[package]]
-name = "proc-macro-nested"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eba180dafb9038b050a4c280019bbedf9f2467b61e5d892dcad585bb57aadc5a"
-
 [[package]]
 name = "proc-macro2"
 version = "0.4.30"
diff --git a/tower-batch/Cargo.toml b/tower-batch/Cargo.toml
index 307a5024..8cc14721 100644
--- a/tower-batch/Cargo.toml
+++ b/tower-batch/Cargo.toml
@@ -6,7 +6,7 @@ license = "MIT"
 edition = "2018"
 
 [dependencies]
-futures = "0.3.17"
+futures = "0.3.18"
 futures-core = "0.3.13"
 pin-project = "1.0.7"
 tokio = { version = "1.14.0", features = ["time", "sync", "tracing", "macros"] }
diff --git a/zebra-consensus/Cargo.toml b/zebra-consensus/Cargo.toml
index 11ad6bd1..1fb4f266 100644
--- a/zebra-consensus/Cargo.toml
+++ b/zebra-consensus/Cargo.toml
@@ -28,7 +28,7 @@ lazy_static = "1.4.0"
 once_cell = "1.8"
 serde = { version = "1", features = ["serde_derive"] }
 
-futures = "0.3.17"
+futures = "0.3.18"
 futures-util = "0.3.17"
 metrics = "0.17.0"
 thiserror = "1.0.30"
diff --git a/zebra-state/Cargo.toml b/zebra-state/Cargo.toml
index 7f459d67..dde7caa1 100644
--- a/zebra-state/Cargo.toml
+++ b/zebra-state/Cargo.toml
@@ -13,7 +13,7 @@ bincode = "1"
 chrono = "0.4.19"
 dirs = "4.0.0"
 displaydoc = "0.2.2"
-futures = "0.3.17"
+futures = "0.3.18"
 hex = "0.4.3"
 lazy_static = "1.4.0"
 metrics = "0.17.0"
diff --git a/zebra-test/Cargo.toml b/zebra-test/Cargo.toml
index 4acd4a61..cea2149e 100644
--- a/zebra-test/Cargo.toml
+++ b/zebra-test/Cargo.toml
@@ -17,7 +17,7 @@ regex = "1.4.6"
 
 tokio = { version = "1.14.0", features = ["full"] }
 tower = { version = "0.4.11", features = ["util"] }
-futures = "0.3.17"
+futures = "0.3.18"
 
 color-eyre = "0.5.11"
 owo-colors = "3.1.0"