diff --git a/Cargo.lock b/Cargo.lock
index af6776cfc8..7f6f211f8c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -222,9 +222,9 @@ checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
 
 [[package]]
 name = "capnp"
-version = "0.21.5"
+version = "0.21.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f62fcad97587224e2a1bd12ec1c7c0e95b93cefd285763a174cf1b34048c6437"
+checksum = "555e876488c4f7a00e205ecacab4159d47062852108702ae07afb7aa4674785b"
 dependencies = [
  "embedded-io",
 ]
diff --git a/conmon-rs/client/Cargo.toml b/conmon-rs/client/Cargo.toml
index 8ceec3e061..9497adfe23 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 = "0.21.5", default-features = false }
+capnp = { version = "0.21.6", 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 8255f9fc68..7aa32c780e 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 = "0.21.5"
+capnp = "0.21.6"
 
 [build-dependencies]
-capnp = { version = "0.21.5", default-features = false }
+capnp = { version = "0.21.6", 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 9d7f80de46..03c38278b9 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 = "0.21.5", default-features = false }
+capnp = { version = "0.21.6", default-features = false }
 capnp-rpc = { version = "0.21.0", default-features = false }
 clap = { version = "4.5.48", 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"] }