diff --git a/Cargo.lock b/Cargo.lock
index 385a982..5dfe0c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2173,7 +2173,7 @@ dependencies = [
  "serde_json",
  "serde_yaml",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.18",
  "tokio",
  "toml",
  "toml_edit 0.25.11+spec-1.1.0",
@@ -2193,7 +2193,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -2211,7 +2211,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "thiserror 1.0.69",
+ "thiserror 2.0.18",
  "tokio",
  "tracing",
  "tracing-subscriber",
diff --git a/crates/sampo-core/Cargo.toml b/crates/sampo-core/Cargo.toml
index 1edd68b..4cc63ee 100644
--- a/crates/sampo-core/Cargo.toml
+++ b/crates/sampo-core/Cargo.toml
@@ -14,7 +14,7 @@ categories = ["development-tools"]
 [dependencies]
 glob = "0.3"
 rustc-hash = "2.0"
-thiserror = "1.0"
+thiserror = "2.0"
 toml = "0.8"
 toml_edit = "0.25"
 changesets = "0.4"
diff --git a/crates/sampo-github-action/Cargo.toml b/crates/sampo-github-action/Cargo.toml
index 7012485..fa26697 100644
--- a/crates/sampo-github-action/Cargo.toml
+++ b/crates/sampo-github-action/Cargo.toml
@@ -13,7 +13,7 @@ categories = ["development-tools"]
 
 [dependencies]
 sampo-core = { version = "0.13.3", path = "../sampo-core" }
-thiserror = "1.0"
+thiserror = "2.0"
 glob = "0.3"
 rustc-hash = "2.0"
 serde_json = "1.0"
diff --git a/crates/sampo-github-bot/Cargo.toml b/crates/sampo-github-bot/Cargo.toml
index 68ac8e3..c23ff5d 100644
--- a/crates/sampo-github-bot/Cargo.toml
+++ b/crates/sampo-github-bot/Cargo.toml
@@ -22,7 +22,7 @@ serde_json = "1"
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["fmt", "env-filter"] }
 http = "1"
-thiserror = "1"
+thiserror = "2"
 jsonwebtoken = { version = "10.3", default-features = false, features = ["use_pem", "rust_crypto"] }
 base64 = "0.22"
 reqwest = { version = "0.12", features = ["json"] }