diff --git a/Cargo.lock b/Cargo.lock
index 866c213aa5..b9286cd143 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -196,7 +196,16 @@ version = "0.21.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4e92edec8974fcd7ece90bb021db782abe14a61c10c817f197f700fef7430eb8"
 dependencies = [
- "embedded-io",
+ "embedded-io 0.6.1",
+]
+
+[[package]]
+name = "capnp"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbffb6e69e1ea2cf518ac5037a78a223ecb82b4ac81e7ab33cb5211b43d712ac"
+dependencies = [
+ "embedded-io 0.7.1",
 ]
 
 [[package]]
@@ -205,7 +214,7 @@ version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d04478adeb234836f886ec554a0d96e3af3a939ba7b3962af5addddf7ab71231"
 dependencies = [
- "capnp",
+ "capnp 0.21.7",
  "futures-channel",
  "futures-util",
 ]
@@ -216,7 +225,7 @@ version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85e9c19ef52ff1b9c9822fb21bfa68a72bc58711676295ff06eb88e64c7877f7"
 dependencies = [
- "capnp",
+ "capnp 0.21.7",
  "capnp-futures",
  "futures",
 ]
@@ -227,7 +236,7 @@ version = "0.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6da96dcb0a0e0c526daf42bac55e1550f18ad973df9ef9ba75204f332c80ad16"
 dependencies = [
- "capnp",
+ "capnp 0.21.7",
 ]
 
 [[package]]
@@ -325,7 +334,7 @@ dependencies = [
 name = "conmon-common"
 version = "0.7.1"
 dependencies = [
- "capnp",
+ "capnp 0.23.0",
  "capnpc",
 ]
 
@@ -336,7 +345,7 @@ dependencies = [
  "anyhow",
  "async-channel",
  "axum",
- "capnp",
+ "capnp 0.23.0",
  "capnp-rpc",
  "clap",
  "command-fds",
@@ -383,7 +392,7 @@ dependencies = [
 name = "conmonrs-cli"
 version = "0.7.1"
 dependencies = [
- "capnp",
+ "capnp 0.23.0",
  "capnp-rpc",
  "conmon-common",
  "futures",
@@ -502,6 +511,12 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edd0f118536f44f5ccd48bcb8b111bdc3de888b58c74639dfb034a357d0f206d"
 
+[[package]]
+name = "embedded-io"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9eb1aa714776b75c7e67e1da744b81a129b3ff919c8712b5e1b32252c1f07cc7"
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
diff --git a/conmon-rs/client/Cargo.toml b/conmon-rs/client/Cargo.toml
index b3b1f9e298..174b727b76 100644
--- a/conmon-rs/client/Cargo.toml
+++ b/conmon-rs/client/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.7.1"
 edition = "2024"
 
 [dependencies]
-capnp = { version = "0.21.7", default-features = false }
+capnp = { version = "0.23.0", default-features = false }
 capnp-rpc = { version = "0.21.0", default-features = false }
 conmon-common = { path = "../common" }
 futures = { version = "0.3.31", default-features = false }
diff --git a/conmon-rs/common/Cargo.toml b/conmon-rs/common/Cargo.toml
index 89d6a195e3..ed53c8c927 100644
--- a/conmon-rs/common/Cargo.toml
+++ b/conmon-rs/common/Cargo.toml
@@ -5,8 +5,8 @@ version = "0.7.1"
 edition = "2024"
 
 [dependencies]
-capnp = "0.21.7"
+capnp = "0.23.0"
 
 [build-dependencies]
-capnp = { version = "0.21.7", default-features = false }
+capnp = { version = "0.23.0", default-features = false }
 capnpc = { version = "0.21.4", default-features = false }
diff --git a/conmon-rs/server/Cargo.toml b/conmon-rs/server/Cargo.toml
index 2b02786385..6fb2258be3 100644
--- a/conmon-rs/server/Cargo.toml
+++ b/conmon-rs/server/Cargo.toml
@@ -11,7 +11,7 @@ path = "src/main.rs"
 anyhow = { version = "1.0.100", default-features = false }
 async-channel = { version = "2.5.0", default-features = false, features = ["std"] }
 axum = { version = "0.8.6", default-features = false, features = ["http2", "tokio", "ws"] }
-capnp = { version = "0.21.7", default-features = false }
+capnp = { version = "0.23.0", default-features = false }
 capnp-rpc = { version = "0.21.0", default-features = false }
 clap = { version = "4.5.51", default-features = false, features = ["color", "cargo", "deprecated", "derive", "deprecated", "env", "error-context", "help", "std", "string", "suggestions", "unicode", "usage", "wrap_help"] }
 command-fds = { version = "0.3.2", default-features = false, features = ["tokio"] }