diff --git a/native/Cargo.lock b/native/Cargo.lock
index 00409e83..c36195bb 100644
--- a/native/Cargo.lock
+++ b/native/Cargo.lock
@@ -379,7 +379,7 @@ name = "libcst_derive"
 version = "1.5.1"
 dependencies = [
  "quote",
- "syn 2.0.75",
+ "syn 2.0.91",
  "trybuild",
 ]
 
@@ -541,9 +541,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.86"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
+checksum = "37d3544b3f2748c54e147655edb5025752e2303145b5aefb3c3ea2c78b973bb0"
 dependencies = [
  "unicode-ident",
 ]
@@ -594,7 +594,7 @@ dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
  "quote",
- "syn 2.0.75",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -606,7 +606,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.75",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -727,7 +727,7 @@ checksum = "24008e81ff7613ed8e5ba0cfaf24e2c2f1e5b8a0495711e44fcd4882fca62bcf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.75",
+ "syn 2.0.91",
 ]
 
 [[package]]
@@ -770,9 +770,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.75"
+version = "2.0.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6af063034fc1935ede7be0122941bafa9bacb949334d090b77ca98b5817c7d9"
+checksum = "d53cbcb5a243bd33b7858b1d7f4aca2153490815872d86d955d6ea29f743c035"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -796,22 +796,22 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.63"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0342370b38b6a11b6cc11d6a805569958d54cfa061a29969c3b5ce2ea405724"
+checksum = "f072643fd0190df67a8bab670c20ef5d8737177d6ac6b2e9a236cb096206b2cc"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.63"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
+checksum = "7b50fa271071aae2e6ee85f842e2e28ba8cd2c5fb67f11fcb1fd70b276f9e7d4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.75",
+ "syn 2.0.91",
 ]
 
 [[package]]
diff --git a/native/libcst/Cargo.toml b/native/libcst/Cargo.toml
index 7cdcc61e..73ae1964 100644
--- a/native/libcst/Cargo.toml
+++ b/native/libcst/Cargo.toml
@@ -37,7 +37,7 @@ trace = ["peg/trace"]
 [dependencies]
 paste = "1.0.15"
 pyo3 = { version = "0.20", optional = true }
-thiserror = "1.0.63"
+thiserror = "2.0.9"
 peg = "0.8.4"
 chic = "1.2.2"
 regex = "1.10.6"