diff --git a/notmuch/Cargo.toml b/notmuch/Cargo.toml
index 7c42c64..d29d039 100644
--- a/notmuch/Cargo.toml
+++ b/notmuch/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 log = "0.4.14"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", features = ["unbounded_depth"] }
-thiserror = "1.0.30"
+thiserror = "2.0.0"
 tracing = "0.1.41"
 
 [dev-dependencies]
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 3160555..8ba2c72 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -37,7 +37,7 @@ serde_json = "1.0.87"
 shared = { path = "../shared" }
 sqlx = { version = "0.8.2", features = ["postgres", "runtime-tokio", "time"] }
 tantivy = { version = "0.22.0", optional = true }
-thiserror = "1.0.37"
+thiserror = "2.0.0"
 tokio = "1.26.0"
 tracing = "0.1.41"
 url = "2.5.2"
diff --git a/web/Cargo.toml b/web/Cargo.toml
index ed537ba..9e73b9c 100644
--- a/web/Cargo.toml
+++ b/web/Cargo.toml
@@ -28,7 +28,7 @@ itertools = "0.14.0"
 serde_json = { version = "1.0.93", features = ["unbounded_depth"] }
 chrono = "0.4.31"
 graphql_client = "0.14.0"
-thiserror = "1.0.50"
+thiserror = "2.0.0"
 seed_hooks = { git = "https://github.com/wathiede/styles_hooks", package = "seed_hooks", branch = "main" }
 gloo-net = { version = "0.6.0", features = ["json", "serde_json"] }
 human_format = "1.1.0"