diff --git a/Cargo.lock b/Cargo.lock
index f594f4a6274..1d8eef482c4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1407,9 +1407,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.15.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
+checksum = "91622ff5e7162018101f2fea40d6ebf4a78bbe5a49736a2020649edf9693679e"
 
 [[package]]
 name = "elliptic-curve"
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 11393331cbb..fc047a15ca3 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["peer-to-peer", "libp2p", "networking"]
 categories = ["network-programming", "asynchronous"]
 
 [dependencies]
-either = "1.11"
+either = "1.16"
 fnv = "1.0"
 futures = { workspace = true, features = ["executor", "thread-pool"] }
 futures-timer = { workspace = true }
diff --git a/examples/ipfs-private/Cargo.toml b/examples/ipfs-private/Cargo.toml
index 085eebc85a3..6d204055dbb 100644
--- a/examples/ipfs-private/Cargo.toml
+++ b/examples/ipfs-private/Cargo.toml
@@ -10,7 +10,7 @@ release = false
 
 [dependencies]
 tokio = { workspace = true, features = ["rt-multi-thread", "macros", "io-std"] }
-either = "1.12"
+either = "1.16"
 futures = { workspace = true }
 libp2p = { path = "../../libp2p", features = [ "tokio", "gossipsub", "dns", "identify", "kad", "macros", "noise", "ping", "pnet", "tcp", "websocket", "yamux"] }
 tracing-subscriber = { workspace = true, features = ["env-filter"] }
diff --git a/hole-punching-tests/Cargo.toml b/hole-punching-tests/Cargo.toml
index 627923da5c7..667399e234e 100644
--- a/hole-punching-tests/Cargo.toml
+++ b/hole-punching-tests/Cargo.toml
@@ -15,4 +15,4 @@ redis = { version = "0.24.0", default-features = false, features = ["tokio-comp"
 tokio = { workspace = true, features = ["full"] }
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.150"
-either = "1.12.0"
+either = "1.16.0"
diff --git a/protocols/autonat/Cargo.toml b/protocols/autonat/Cargo.toml
index d37cc7210a1..d850161f101 100644
--- a/protocols/autonat/Cargo.toml
+++ b/protocols/autonat/Cargo.toml
@@ -17,7 +17,7 @@ categories = ["network-programming", "asynchronous"]
 
 [dependencies]
 asynchronous-codec = { workspace = true }
-either = { version = "1.9.0", optional = true }
+either = { version = "1.16.0", optional = true }
 futures = { workspace = true }
 futures-bounded = { workspace = true, optional = true }
 futures-timer = { workspace = true }
diff --git a/protocols/dcutr/Cargo.toml b/protocols/dcutr/Cargo.toml
index 45c83101d39..d25feb32e69 100644
--- a/protocols/dcutr/Cargo.toml
+++ b/protocols/dcutr/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["network-programming", "asynchronous"]
 
 [dependencies]
 asynchronous-codec = { workspace = true }
-either = "1.11.0"
+either = "1.16.0"
 futures = { workspace = true }
 futures-timer = { workspace = true }
 web-time = { workspace = true }
diff --git a/protocols/gossipsub/Cargo.toml b/protocols/gossipsub/Cargo.toml
index ae6675d7ae1..46976d99c7e 100644
--- a/protocols/gossipsub/Cargo.toml
+++ b/protocols/gossipsub/Cargo.toml
@@ -20,7 +20,7 @@ asynchronous-codec = { workspace = true }
 base64 = "0.22.1"
 byteorder = "1.5.0"
 bytes.workspace = true
-either = "1.11"
+either = "1.16"
 fnv = "1.0.7"
 futures = { workspace = true }
 futures-timer = { workspace = true }
diff --git a/protocols/identify/Cargo.toml b/protocols/identify/Cargo.toml
index 6e65d8cb2a0..c4be57e7bd2 100644
--- a/protocols/identify/Cargo.toml
+++ b/protocols/identify/Cargo.toml
@@ -23,7 +23,7 @@ prost = { workspace = true }
 smallvec = "1.15.1"
 thiserror = { workspace = true }
 tracing = { workspace = true }
-either = "1.12.0"
+either = "1.16.0"
 
 [dev-dependencies]
 tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }
diff --git a/protocols/kad/Cargo.toml b/protocols/kad/Cargo.toml
index 183aecec050..04a4bfbedb1 100644
--- a/protocols/kad/Cargo.toml
+++ b/protocols/kad/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["network-programming", "asynchronous"]
 
 [dependencies]
 bytes.workspace = true
-either = "1.11"
+either = "1.16"
 fnv = "1.0"
 asynchronous-codec = { workspace = true }
 futures = { workspace = true }
diff --git a/protocols/relay/Cargo.toml b/protocols/relay/Cargo.toml
index f1b8a2cc37f..10fb65b0288 100644
--- a/protocols/relay/Cargo.toml
+++ b/protocols/relay/Cargo.toml
@@ -13,7 +13,7 @@ categories = ["network-programming", "asynchronous"]
 [dependencies]
 asynchronous-codec = { workspace = true }
 bytes.workspace = true
-either = "1.12.0"
+either = "1.16.0"
 futures = { workspace = true }
 futures-timer = { workspace = true }
 futures-bounded = { workspace = true }
diff --git a/swarm/Cargo.toml b/swarm/Cargo.toml
index d49b2330e01..3a8544f3c52 100644
--- a/swarm/Cargo.toml
+++ b/swarm/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["peer-to-peer", "libp2p", "networking"]
 categories = ["network-programming", "asynchronous"]
 
 [dependencies]
-either = "1.11.0"
+either = "1.16.0"
 fnv = "1.0"
 futures = { workspace = true }
 futures-timer = { workspace = true }
@@ -37,7 +37,7 @@ macros = ["dep:libp2p-swarm-derive"]
 tokio = ["dep:tokio"]
 
 [dev-dependencies]
-either = "1.11.0"
+either = "1.16.0"
 futures = { workspace = true }
 libp2p-identify = { path = "../protocols/identify" } # Using `path` here because this is a cyclic dev-dependency which otherwise breaks releasing.
 libp2p-identity = { workspace = true, features = ["ed25519"] }
diff --git a/transports/websocket/Cargo.toml b/transports/websocket/Cargo.toml
index 7b6d4e9c628..e81b5300b65 100644
--- a/transports/websocket/Cargo.toml
+++ b/transports/websocket/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["network-programming", "asynchronous"]
 
 [dependencies]
 futures-rustls = { workspace = true, features = ["ring"] }
-either = "1.12.0"
+either = "1.16.0"
 futures = { workspace = true }
 libp2p-core = { workspace = true }
 libp2p-identity = { workspace = true }