diff --git a/Cargo.toml b/Cargo.toml
index 38f4999..22aa5e9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,7 +40,7 @@ tree-sitter-polybench = { path = "poly-bench-grammar" }
 
 # Shared dependencies
 miette = { version = "7", features = ["fancy"] }
-thiserror = "1"
+thiserror = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tokio = { version = "1", features = ["full"] }
diff --git a/poly-bench-lsp-v2/Cargo.toml b/poly-bench-lsp-v2/Cargo.toml
index 5e2e313..c9e19bf 100644
--- a/poly-bench-lsp-v2/Cargo.toml
+++ b/poly-bench-lsp-v2/Cargo.toml
@@ -21,7 +21,7 @@ ropey = "1.6"
 dashmap = "5"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-thiserror = "1.0"
+thiserror = "2.0"
 once_cell = "1"
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
diff --git a/poly-bench-syntax/Cargo.toml b/poly-bench-syntax/Cargo.toml
index e1755a1..80bcae1 100644
--- a/poly-bench-syntax/Cargo.toml
+++ b/poly-bench-syntax/Cargo.toml
@@ -8,7 +8,7 @@ license = "MIT"
 [dependencies]
 tree-sitter = "0.26"
 tree-sitter-polybench = { path = "../poly-bench-grammar" }
-thiserror = "1.0"
+thiserror = "2.0"
 miette = { version = "7", features = ["fancy"] }
 
 [dev-dependencies]