diff --git a/Cargo.lock b/Cargo.lock
index 4b9bb0f13..51137b666 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -180,7 +180,7 @@ dependencies = [
  "clang-sys",
  "itertools 0.13.0",
  "log",
- "prettyplease",
+ "prettyplease 0.2.37",
  "proc-macro2",
  "quote",
  "regex",
@@ -1578,10 +1578,10 @@ dependencies = [
  "env_logger",
  "hyperlight-component-util",
  "itertools 0.15.0",
- "prettyplease",
+ "prettyplease 0.3.0",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.1",
 ]
 
 [[package]]
@@ -1589,10 +1589,10 @@ name = "hyperlight-component-util"
 version = "0.16.0"
 dependencies = [
  "itertools 0.15.0",
- "prettyplease",
+ "prettyplease 0.3.0",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.1",
  "tracing",
  "wasmparser 0.253.0",
  "wit-component",
@@ -1645,7 +1645,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.1",
 ]
 
 [[package]]
@@ -2917,6 +2917,16 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "prettyplease"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bfe0f4c752e450fc2faf62654f1c134747922825d5b04ca717b8874f41a40c0"
+dependencies = [
+ "proc-macro2",
+ "syn 3.0.1",
+]
+
 [[package]]
 name = "proc-macro-crate"
 version = "3.5.0"
diff --git a/src/hyperlight_component_macro/Cargo.toml b/src/hyperlight_component_macro/Cargo.toml
index 79509a0e7..07f3baa48 100644
--- a/src/hyperlight_component_macro/Cargo.toml
+++ b/src/hyperlight_component_macro/Cargo.toml
@@ -18,8 +18,8 @@ proc-macro = true
 [dependencies]
 quote = { version = "1.0.45" }
 proc-macro2 = { version = "1.0.106" }
-syn = { version = "2.0.117" }
+syn = { version = "3.0.1" }
 itertools = { version = "0.15.0" }
-prettyplease = { version = "0.2.37" }
+prettyplease = { version = "0.3.0" }
 hyperlight-component-util = { workspace = true }
 env_logger = { version = "0.11.10" }
\ No newline at end of file
diff --git a/src/hyperlight_component_util/Cargo.toml b/src/hyperlight_component_util/Cargo.toml
index 9545f1c3b..7ff9d9567 100644
--- a/src/hyperlight_component_util/Cargo.toml
+++ b/src/hyperlight_component_util/Cargo.toml
@@ -20,7 +20,7 @@ wit-component = { version = "0.252.0" }
 wit-parser = { version = "0.252.0" }
 quote = { version = "1.0.45" }
 proc-macro2 = { version = "1.0.106" }
-syn = { version = "2.0.117" }
+syn = { version = "3.0.1" }
 itertools = { version = "0.15.0" }
-prettyplease = { version = "0.2.37" }
+prettyplease = { version = "0.3.0" }
 tracing = { version = "0.1.44", features = ["log"]}
\ No newline at end of file
diff --git a/src/hyperlight_guest_macro/Cargo.toml b/src/hyperlight_guest_macro/Cargo.toml
index bbfdd4386..2871e72e1 100644
--- a/src/hyperlight_guest_macro/Cargo.toml
+++ b/src/hyperlight_guest_macro/Cargo.toml
@@ -12,7 +12,7 @@ Macros for registering guest and host functions on hyperlight guests binaries.
 """
 
 [dependencies]
-syn = { version = "2", features = ["full"] }
+syn = { version = "3", features = ["full"] }
 quote = "1"
 proc-macro2 = "1.0"
 proc-macro-crate = "3.5.0"
diff --git a/src/hyperlight_guest_macro/src/lib.rs b/src/hyperlight_guest_macro/src/lib.rs
index e4f9404ab..6f25119c2 100644
--- a/src/hyperlight_guest_macro/src/lib.rs
+++ b/src/hyperlight_guest_macro/src/lib.rs
@@ -313,6 +313,7 @@ pub fn host_function(attr: TokenStream, item: TokenStream) -> TokenStream {
         vis,
         sig,
         semi_token: _,
+        modifiers: _,
     } = fn_declaration;
 
     // Obtain the name of the function being decorated.
diff --git a/src/tests/rust_guests/Cargo.lock b/src/tests/rust_guests/Cargo.lock
index 4b489c3e8..455967639 100644
--- a/src/tests/rust_guests/Cargo.lock
+++ b/src/tests/rust_guests/Cargo.lock
@@ -105,7 +105,7 @@ checksum = "f9abbd1bc6865053c427f7198e6af43bfdedc55ab791faed4fbd361d789575ff"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -140,7 +140,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -255,7 +255,7 @@ dependencies = [
  "prettyplease",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 3.0.2",
 ]
 
 [[package]]
@@ -266,7 +266,7 @@ dependencies = [
  "prettyplease",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 3.0.2",
  "tracing",
  "wasmparser 0.253.0",
  "wit-component",
@@ -308,7 +308,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 3.0.2",
 ]
 
 [[package]]
@@ -382,7 +382,7 @@ checksum = "0666b5ab5ecaca213fc2a85b8c0083d9004e84ee2d5f9a7e0017aaf50986f25f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -408,7 +408,7 @@ checksum = "32d59e20403c7d08fe62b4376edfe5c7fb2ef1e6b1465379686d0f21c8df444b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -467,12 +467,12 @@ dependencies = [
 
 [[package]]
 name = "prettyplease"
-version = "0.2.37"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+checksum = "2bfe0f4c752e450fc2faf62654f1c134747922825d5b04ca717b8874f41a40c0"
 dependencies = [
  "proc-macro2",
- "syn",
+ "syn 3.0.2",
 ]
 
 [[package]]
@@ -503,7 +503,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -600,7 +600,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -660,6 +660,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a207d6d6a2b7fc470b80443726053f18a2481b7e1eee970597051596567987a3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "thiserror"
 version = "2.0.18"
@@ -677,7 +688,7 @@ checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]
@@ -730,7 +741,7 @@ checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.118",
 ]
 
 [[package]]