diff --git a/catalyst-agent/Cargo.lock b/catalyst-agent/Cargo.lock
index ec3aee98e..376386c41 100644
--- a/catalyst-agent/Cargo.lock
+++ b/catalyst-agent/Cargo.lock
@@ -746,7 +746,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1347,18 +1347,6 @@ dependencies = [
  "hybrid-array",
 ]
 
-[[package]]
-name = "internal-russh-num-bigint"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae8e22120c32fb4d19ec55fba35015f57095cd95a2e3b732e44457f5915b2ee8"
-dependencies = [
- "num-integer",
- "num-traits",
- "rand",
- "rand_core",
-]
-
 [[package]]
 name = "ipnet"
 version = "2.12.1"
@@ -1632,12 +1620,14 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.4.8"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c89e69e7e0f03bea5ef08013795c25018e101932225a656383bd384495ecc367"
+checksum = "93e7820bc0a80a0238e650327316f929ba18d5be054b647490a3a6a339f3e7c0"
 dependencies = [
  "num-integer",
  "num-traits",
+ "rand",
+ "rand_core",
 ]
 
 [[package]]
@@ -2119,7 +2109,7 @@ dependencies = [
  "once_cell",
  "socket2",
  "tracing",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2286,9 +2276,9 @@ dependencies = [
 
 [[package]]
 name = "russh"
-version = "0.62.6"
+version = "0.63.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b41043523e0edcbd4e31d00903e26f12994f63b21bae9904f7405c1ed92752a5"
+checksum = "036204edbd199552a5b3832f63c60dcdf395dc44c7f06b4af1c0e8139cc11bce"
 dependencies = [
  "aes",
  "aws-lc-rs",
@@ -2317,7 +2307,6 @@ dependencies = [
  "hex-literal",
  "hmac",
  "inout",
- "internal-russh-num-bigint",
  "keccak",
  "log",
  "md5",
@@ -2425,7 +2414,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2483,7 +2472,7 @@ dependencies = [
  "security-framework",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2966,7 +2955,7 @@ dependencies = [
  "getrandom 0.4.3",
  "once_cell",
  "rustix",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -3581,7 +3570,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
diff --git a/catalyst-agent/Cargo.toml b/catalyst-agent/Cargo.toml
index 06e914939..6f81b8932 100644
--- a/catalyst-agent/Cargo.toml
+++ b/catalyst-agent/Cargo.toml
@@ -39,7 +39,7 @@ tonic = "0.14"
 prost = "0.14"
 prost-types = "0.14"
 # russh 0.62 folds keys into the main crate; keep ssh-key for host-key IO helpers
-russh = "0.62"
+russh = "0.63"
 russh-sftp = "2.4"
 ssh-key = "0.7.0-rc"
 anyhow = "1"