diff --git a/backend/Cargo.lock b/backend/Cargo.lock
index 77be30a..47cfece 100644
--- a/backend/Cargo.lock
+++ b/backend/Cargo.lock
@@ -251,7 +251,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sqlx",
- "thiserror 2.0.7",
+ "thiserror 2.0.9",
  "tokio",
  "tower",
  "tower-http",
@@ -2012,7 +2012,7 @@ dependencies = [
  "rustc-hash",
  "rustls",
  "socket2",
- "thiserror 2.0.7",
+ "thiserror 2.0.9",
  "tokio",
  "tracing",
 ]
@@ -2031,7 +2031,7 @@ dependencies = [
  "rustls",
  "rustls-pki-types",
  "slab",
- "thiserror 2.0.7",
+ "thiserror 2.0.9",
  "tinyvec",
  "tracing",
  "web-time",
@@ -2847,11 +2847,11 @@ 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]]
@@ -2867,9 +2867,9 @@ 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",
@@ -3784,7 +3784,7 @@ dependencies = [
  "pbkdf2",
  "rand",
  "sha1",
- "thiserror 2.0.7",
+ "thiserror 2.0.9",
  "time",
  "zeroize",
  "zopfli",
diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index 3d4ce8e..ba13ded 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -36,7 +36,7 @@ sqlx = { version = "0.8.1", features = [
     "chrono",
     "uuid",
 ] }
-thiserror = "2.0.7"
+thiserror = "2.0.9"
 tokio = { version = "1.42.0", features = ["full"] }
 # tokio-stream = { version = "0.1.16", features = ["sync"] }
 # tokio-tungstenite = "0.24.0"