diff --git a/Cargo.lock b/Cargo.lock
index 2a6fe4c..4978460 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -424,11 +424,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.7"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93605438cbd668185516ab499d589afb7ee1859ea3d5fc8f6b0755e1c7443767"
+checksum = "f072643fd0190df67a8bab670c20ef5d8737177d6ac6b2e9a236cb096206b2cc"
 dependencies = [
- "thiserror-impl 2.0.7",
+ "thiserror-impl 2.0.9",
 ]
 
 [[package]]
@@ -444,9 +444,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.7"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1d8749b4531af2117677a5fcd12b1348a3fe2b81e36e61ffeac5c4aa3273e36"
+checksum = "7b50fa271071aae2e6ee85f842e2e28ba8cd2c5fb67f11fcb1fd70b276f9e7d4"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -557,7 +557,7 @@ version = "0.5.6"
 dependencies = [
  "magnus",
  "rb-sys",
- "thiserror 2.0.7",
+ "thiserror 2.0.9",
  "y-sync",
  "yrs",
 ]
diff --git a/ext/yrb/Cargo.toml b/ext/yrb/Cargo.toml
index 700b17c..9b85a96 100644
--- a/ext/yrb/Cargo.toml
+++ b/ext/yrb/Cargo.toml
@@ -8,7 +8,7 @@ repository = "https://github.com/y-crdt/yrb"
 
 [dependencies]
 magnus = "=0.6.4"
-thiserror = "2.0.7"
+thiserror = "2.0.9"
 yrs = "=0.17.4"
 y-sync = "=0.4.0"
 rb-sys = "0.9.103"