diff --git a/Cargo.lock b/Cargo.lock
index 3f7265b..3445e98 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -23,18 +23,24 @@ version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
 
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
 [[package]]
 name = "bindgen"
-version = "0.68.1"
+version = "0.69.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "726e4313eb6ec35d2730258ad4e15b547ee75d6afaa1361a922e78e59b7d8078"
+checksum = "271383c67ccabffb7381723dea0672a673f292304fcb45c01cc648c7a8d58088"
 dependencies = [
  "bitflags",
  "cexpr",
  "clang-sys",
+ "itertools",
  "lazy_static",
  "lazycell",
- "peeking_take_while",
  "proc-macro2",
  "quote",
  "regex",
@@ -129,6 +135,12 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "either"
+version = "1.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91622ff5e7162018101f2fea40d6ebf4a78bbe5a49736a2020649edf9693679e"
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -231,6 +243,15 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.18"
@@ -302,6 +323,7 @@ dependencies = [
 name = "microvm-runtime"
 version = "0.4.0-alpha.1"
 dependencies = [
+ "base64",
  "libc",
  "nix 0.30.1",
  "serde",
@@ -310,6 +332,7 @@ dependencies = [
  "tempfile",
  "thiserror 2.0.18",
  "userfaultfd",
+ "vsock",
 ]
 
 [[package]]
@@ -342,6 +365,19 @@ dependencies = [
  "memoffset",
 ]
 
+[[package]]
+name = "nix"
+version = "0.31.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf20d2fde8ff38632c426f1165ed7436270b44f199fc55284c38276f9db47c3d"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "cfg_aliases",
+ "libc",
+ "memoffset",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -358,12 +394,6 @@ version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
-[[package]]
-name = "peeking_take_while"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
-
 [[package]]
 name = "prettyplease"
 version = "0.2.37"
@@ -596,9 +626,9 @@ checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
 
 [[package]]
 name = "userfaultfd"
-version = "0.8.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18d8b176d4d3e420685e964f87c25df5fdd5b26d7eb0d0e7c892d771f5b81035"
+checksum = "5b3a8a0cb358f7d1b7ee9b6784be122b6f51248a6d9e214d555beb9b44c72aea"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -610,9 +640,9 @@ dependencies = [
 
 [[package]]
 name = "userfaultfd-sys"
-version = "0.5.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d75595d2a62b7db16bd47f5a1ce14e1fe05ccbe27d6c96721a958e0a027cad41"
+checksum = "dc91d95a797a81604af22946d0e86656f27feb0b9665c60665cf3554df12d1a8"
 dependencies = [
  "bindgen",
  "cc",
@@ -625,6 +655,16 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "vsock"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ba782755fc073877e567c2253c0be48e4aa9a254c232d36d3985dfae0bd5205"
+dependencies = [
+ "libc",
+ "nix 0.31.3",
+]
+
 [[package]]
 name = "wasip2"
 version = "1.0.3+wasi-0.2.9"
diff --git a/Cargo.toml b/Cargo.toml
index ea74c66..5590ba8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,7 +47,7 @@ libc = "0.2"
 # feature so docs.rs builds (and `cargo test --no-default-features`) don't pull
 # it in. Pinned to 0.8 — the only series that builds cleanly on edition 2024 +
 # rustc 1.91 at the time of writing (0.9 exists but requires a newer nix).
-userfaultfd = { version = "0.8", optional = true }
+userfaultfd = { version = "0.9", optional = true }
 
 [dev-dependencies]
 tempfile = "3"