diff --git a/hphp/hack/src/Cargo.lock b/hphp/hack/src/Cargo.lock
index ab059cf5a367a..c74113bea9b2f 100644
--- a/hphp/hack/src/Cargo.lock
+++ b/hphp/hack/src/Cargo.lock
@@ -331,7 +331,7 @@ checksum = "721cae7de5c34fbb2acd27e21e6d2cf7b886dce0c27388d46c4e6c47ea4318dd"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -547,7 +547,7 @@ checksum = "965ab7eb5f8f97d2a083c799f3a1b994fc397b2fe2da5d1da1626ce15a39f2b1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -599,7 +599,7 @@ dependencies = [
  "quote",
  "serde",
  "serde_json",
- "syn 2.0.89",
+ "syn 2.0.96",
  "tempfile",
  "toml",
 ]
@@ -756,7 +756,7 @@ dependencies = [
  "heck 0.5.0",
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -1214,7 +1214,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -1229,7 +1229,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -1458,7 +1458,7 @@ dependencies = [
  "convert_case 0.6.0",
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
  "unicode-xid",
 ]
 
@@ -1694,7 +1694,7 @@ checksum = "eecf8589574ce9b895052fa12d69af7a233f99e6107f5cb8dd1044f2a17bfdcb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -2035,7 +2035,7 @@ checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -4597,7 +4597,7 @@ checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -4937,7 +4937,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -4953,9 +4953,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.89"
+version = "2.0.96"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44d46482f1c1c87acd84dea20c1bf5ebff4c757009ed6bf19cfd36fb10e92c4e"
+checksum = "d5d0adab1ae378d7f53bdebc67a39f1f151407ef230f0ce2883572f5d8985c80"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5131,7 +5131,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -5142,7 +5142,7 @@ checksum = "e1d8749b4531af2117677a5fcd12b1348a3fe2b81e36e61ffeac5c4aa3273e36"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]
@@ -5498,7 +5498,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
  "wasm-bindgen-shared",
 ]
 
@@ -5520,7 +5520,7 @@ checksum = "26c6ab57572f7a24a4985830b120de1594465e5d500f24afe89e16b4e833ef68"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -5845,7 +5845,7 @@ checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.89",
+ "syn 2.0.96",
 ]
 
 [[package]]