diff --git a/Cargo.lock b/Cargo.lock
index 205b953..5f8ce95 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -60,9 +60,9 @@ checksum = "7b02b629252fe8ef6460461409564e2c21d0c8e77e0944f3d189ff06c4e932ad"
 
 [[package]]
 name = "cbindgen"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6358dedf60f4d9b8db43ad187391afe959746101346fe51bb978126bec61dfb"
+checksum = "faeaa693e5a727975a79211b8f35c0cb09b031fdb6eaa4a788bc6713d01488ca"
 dependencies = [
  "clap",
  "heck",
@@ -393,9 +393,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.56"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
+checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/cpp/hello/Cargo.toml b/cpp/hello/Cargo.toml
index 40400df..0220813 100644
--- a/cpp/hello/Cargo.toml
+++ b/cpp/hello/Cargo.toml
@@ -10,4 +10,4 @@ thiserror = "1.0"
 hello = { path = "../../rust/hello" }
 
 [build-dependencies]
-cbindgen = "0.24"
+cbindgen = "0.25"
diff --git a/wasm/hello-emscripten/Cargo.toml b/wasm/hello-emscripten/Cargo.toml
index deacde0..a84882e 100644
--- a/wasm/hello-emscripten/Cargo.toml
+++ b/wasm/hello-emscripten/Cargo.toml
@@ -12,4 +12,4 @@ crate-type = ["staticlib"]
 hello-cpp = { path = "../../cpp/hello" }
 
 [build-dependencies]
-cbindgen = "0.24"
+cbindgen = "0.25"