diff --git a/spec/fixtures/components/rust_app/Cargo.lock b/spec/fixtures/components/rust_app/Cargo.lock
index 775f799..a015e90 100644
--- a/spec/fixtures/components/rust_app/Cargo.lock
+++ b/spec/fixtures/components/rust_app/Cargo.lock
@@ -4,9 +4,9 @@ version = 4
 
 [[package]]
 name = "anyhow"
-version = "1.0.98"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"
+checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
 
 [[package]]
 name = "base64"
@@ -16,9 +16,9 @@ checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
 [[package]]
 name = "bitflags"
-version = "2.9.0"
+version = "2.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c8214115b7bf84099f1309324e63141d4c5d7cc26862f97a0a857dbefe165bd"
+checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da"
 
 [[package]]
 name = "ctor"
@@ -59,15 +59,15 @@ checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
 name = "foldhash"
-version = "0.1.5"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
+checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
 
 [[package]]
 name = "hashbrown"
-version = "0.15.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
+checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
 dependencies = [
  "foldhash",
 ]
@@ -80,19 +80,20 @@ checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "id-arena"
-version = "2.2.1"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25a2bc672d1148e28034f176e01fffebb08b35768468cc954630da77a1449005"
+checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
 
 [[package]]
 name = "indexmap"
-version = "2.9.0"
+version = "2.14.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
+checksum = "07aa2048142242915a31d35844fb311e0e53fcca590c3a0a40dcf1b841fa09eb"
 dependencies = [
  "equivalent",
  "hashbrown",
  "serde",
+ "serde_core",
 ]
 
 [[package]]
@@ -113,6 +114,17 @@ version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
 
+[[package]]
+name = "macro-string"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59a9dbbfc75d2688ed057456ce8a3ee3f48d12eec09229f560f3643b9f275653"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "memchr"
 version = "2.7.4"
@@ -231,21 +243,15 @@ dependencies = [
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.18"
+version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
-
-[[package]]
-name = "unicode-xid"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
 [[package]]
 name = "wasm-encoder"
-version = "0.241.2"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e01164c9dda68301e34fdae536c23ed6fe90ce6d97213ccc171eebbd3d02d6b8"
+checksum = "e974fe6821a8cf64575d51ea2194e2c8f77e7b66e9afe7419ce8a97f9ee0d251"
 dependencies = [
  "leb128fmt",
  "wasmparser",
@@ -253,9 +259,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-metadata"
-version = "0.241.2"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "876fe286f2fa416386deedebe8407e6f19e0b5aeaef3d03161e77a15fa80f167"
+checksum = "18a11585adb92fe9b55ad1d760e8d8fb5d87e0d2e303cb8eed57f078d54293a2"
 dependencies = [
  "anyhow",
  "indexmap",
@@ -265,9 +271,9 @@ dependencies = [
 
 [[package]]
 name = "wasmparser"
-version = "0.241.2"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46d90019b1afd4b808c263e428de644f3003691f243387d30d673211ee0cb8e8"
+checksum = "d9a61719f93a87b16d325921e251800c4833f8fab50fa21c7de73aed50086313"
 dependencies = [
  "bitflags",
  "hashbrown",
@@ -277,9 +283,9 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen"
-version = "0.48.1"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f8c2adb5f74ac9395bc3121c99a1254bf9310482c27b13f97167aedb5887138"
+checksum = "e473fd0095479f9689ac7d2a52c427cc96bb2b973ace50238dfcc1ab1cd52d93"
 dependencies = [
  "bitflags",
  "wit-bindgen-rust-macro",
@@ -287,9 +293,9 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen-core"
-version = "0.48.1"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b881a098cae03686d7a0587f8f306f8a58102ad8da8b5599100fbe0e7f5800b"
+checksum = "87445680dfe6d6b5369e884bd63c03a3335268e855365b2fc3f7bcdce96a630e"
 dependencies = [
  "anyhow",
  "heck",
@@ -298,9 +304,9 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen-rust"
-version = "0.48.1"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69667efa439a453e1d50dac939c6cab6d2c3ac724a9d232b6631dad2472a5b70"
+checksum = "72f2fe494de0d898216caf0fd0ae76af75753fcb3ff4f465b46131537cf24cf8"
 dependencies = [
  "anyhow",
  "heck",
@@ -314,11 +320,12 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen-rust-macro"
-version = "0.48.1"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eae2e22cceb5d105d52326c07e3e67603a861cc7add70fc467f7cc7ec5265017"
+checksum = "59283a01aec94f60f92ada22ffe182a5cea8acfce43be3be688de8d52df55312"
 dependencies = [
  "anyhow",
+ "macro-string",
  "prettyplease",
  "proc-macro2",
  "quote",
@@ -329,9 +336,9 @@ dependencies = [
 
 [[package]]
 name = "wit-component"
-version = "0.241.2"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd0c57df25e7ee612d946d3b7646c1ddb2310f8280aa2c17e543b66e0812241"
+checksum = "481b5c47b2ecce0389b5e08a05557d6a190c9cd761773b8880a8017ee04dc7ef"
 dependencies = [
  "anyhow",
  "bitflags",
@@ -348,11 +355,12 @@ dependencies = [
 
 [[package]]
 name = "wit-parser"
-version = "0.241.2"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09ef1c6ad67f35c831abd4039c02894de97034100899614d1c44e2268ad01c91"
+checksum = "ff4daaa3cd97ae49ecd0a99dc009d453f93e0f083dd3be38c0f24a83a93e37ac"
 dependencies = [
  "anyhow",
+ "hashbrown",
  "id-arena",
  "indexmap",
  "log",
@@ -360,6 +368,6 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "unicode-xid",
+ "unicode-ident",
  "wasmparser",
 ]
diff --git a/spec/fixtures/components/rust_app/Cargo.toml b/spec/fixtures/components/rust_app/Cargo.toml
index 7d312d2..776f2a8 100644
--- a/spec/fixtures/components/rust_app/Cargo.toml
+++ b/spec/fixtures/components/rust_app/Cargo.toml
@@ -8,7 +8,7 @@ crate-type = ["cdylib"]
 
 [dependencies]
 # https://crates.io/crates/wit-bindgen
-wit-bindgen = "0.48"
+wit-bindgen = "0.61"
 serde_json = "1.0.145"
 once_cell = "1.21.3"
 ctor = "0.4.2"