diff --git a/Cargo.lock b/Cargo.lock
index a7750dc..c6137b7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -77,7 +77,7 @@ dependencies = [
 name = "rust-wasi-hello"
 version = "0.0.0"
 dependencies = [
- "wit-bindgen-rt 0.39.0",
+ "wit-bindgen-rt 0.40.0",
  "wstd",
 ]
 
@@ -127,9 +127,9 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen-rt"
-version = "0.39.0"
+version = "0.40.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+checksum = "68faed92ae696b93ea9a7b67ba6c37bf09d72c6d9a70fa824a743c3020212f11"
 dependencies = [
  "bitflags",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 5bc61b6..e01eccc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,5 +14,5 @@ package = "component:rust-wasi-hello"
 proxy = true
 
 [dependencies]
-wit-bindgen-rt = { version = "0.39.0", features = ["bitflags"] }
+wit-bindgen-rt = { version = "0.40.0", features = ["bitflags"] }
 wstd = "0.5.1"