diff --git a/divviup/rust/Cargo.lock b/divviup/rust/Cargo.lock
index c7bc882..5df5426 100644
--- a/divviup/rust/Cargo.lock
+++ b/divviup/rust/Cargo.lock
@@ -525,7 +525,7 @@ dependencies = [
  "jni",
  "prio",
  "rand",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -1254,7 +1254,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_yaml",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tokio",
  "tracing",
  "trillium",
@@ -1275,7 +1275,7 @@ dependencies = [
  "prio",
  "rand",
  "serde",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "url",
 ]
 
@@ -1609,7 +1609,7 @@ dependencies = [
  "sha2",
  "sha3",
  "subtle",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -2159,11 +2159,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.17"
+version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
 dependencies = [
- "thiserror-impl 2.0.17",
+ "thiserror-impl 2.0.18",
 ]
 
 [[package]]
@@ -2179,9 +2179,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.17"
+version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/divviup/rust/Cargo.toml b/divviup/rust/Cargo.toml
index 2beaf0f..b701033 100644
--- a/divviup/rust/Cargo.toml
+++ b/divviup/rust/Cargo.toml
@@ -13,4 +13,4 @@ janus_messages = "0.7.102"
 jni = "0.21.1"
 prio = "0.16.8"
 rand = "0.8.5"
-thiserror = "2.0.17"
+thiserror = "2.0.18"