diff --git a/Cargo.lock b/Cargo.lock
index a936a19c..0e137d92 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1320,18 +1320,18 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
 [[package]]
 name = "thiserror"
-version = "1.0.69"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+checksum = "037e29b009aa709f293b974da5cd33b15783c049e07f8435778ce8c4871525d8"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.69"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+checksum = "ea4778c7e8ff768bdb32a58a2349903859fe719a320300d7d4ce8636f19a1e69"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/package/origlang-cli/Cargo.toml b/package/origlang-cli/Cargo.toml
index 01410201..1bfda86e 100644
--- a/package/origlang-cli/Cargo.toml
+++ b/package/origlang-cli/Cargo.toml
@@ -10,7 +10,7 @@ license = "MPL-2.0"
 clap = { version = "4.5.4", features = ["derive"] }
 env_logger = "0.11.3"
 log = "0.4.21"
-thiserror = "1.0.59"
+thiserror = "2.0.0"
 origlang-typesystem-model = { path = "../origlang-typesystem-model" }
 origlang-typecheck = { path = "../origlang-typecheck" }
 origlang-runtime = { path = "../origlang-runtime" }
diff --git a/package/origlang-compiler-entrypoint/Cargo.toml b/package/origlang-compiler-entrypoint/Cargo.toml
index 5c7e162c..e1abfbbe 100644
--- a/package/origlang-compiler-entrypoint/Cargo.toml
+++ b/package/origlang-compiler-entrypoint/Cargo.toml
@@ -15,4 +15,4 @@ origlang-ir-optimizer = { path = "../origlang-ir-optimizer" }
 origlang-lexer = { path = "../origlang-lexer" }
 origlang-parser = { path = "../origlang-parser" }
 origlang-typecheck = { path = "../origlang-typecheck" }
-thiserror = { version = "1.0.59" }
+thiserror = { version = "2.0.0" }
diff --git a/package/origlang-interop/Cargo.toml b/package/origlang-interop/Cargo.toml
index 6eb007c8..88a87ca9 100644
--- a/package/origlang-interop/Cargo.toml
+++ b/package/origlang-interop/Cargo.toml
@@ -20,4 +20,4 @@ origlang-parser = { path = "../origlang-parser" }
 js-sys = "0.3.69"
 console_error_panic_hook = "0.1.7"
 web-sys = { version = "0.3.69", features = ["console"] }
-thiserror = "1.0.59"
+thiserror = "2.0.0"
diff --git a/package/origlang-lexer/Cargo.toml b/package/origlang-lexer/Cargo.toml
index d9a49d4d..56f7af57 100644
--- a/package/origlang-lexer/Cargo.toml
+++ b/package/origlang-lexer/Cargo.toml
@@ -6,6 +6,6 @@ license = "MIT"
 
 [dependencies]
 log = "0.4.21"
-thiserror = "1.0.61"
+thiserror = "2.0.0"
 origlang-ast = { path = "../origlang-ast" }
 origlang-source-span = { path = "../origlang-source-span" }
diff --git a/package/origlang-parser/Cargo.toml b/package/origlang-parser/Cargo.toml
index cabc1b47..5a1c08e3 100644
--- a/package/origlang-parser/Cargo.toml
+++ b/package/origlang-parser/Cargo.toml
@@ -12,4 +12,4 @@ origlang-ast = { path = "../origlang-ast" }
 origlang-source-span = { path = "../origlang-source-span" }
 origlang-lexer = { path = "../origlang-lexer" }
 origlang-token-stream = { path = "../origlang-token-stream" }
-thiserror = "1.0.61"
+thiserror = "2.0.0"
diff --git a/package/origlang-runtime/Cargo.toml b/package/origlang-runtime/Cargo.toml
index 920b780f..80fd1bdf 100644
--- a/package/origlang-runtime/Cargo.toml
+++ b/package/origlang-runtime/Cargo.toml
@@ -7,7 +7,7 @@ license = "MPL-2.0"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-thiserror = "1.0.59"
+thiserror = "2.0.0"
 derivative = "2.2.0"
 derive_more = "0.99.17"
 log = "0.4.21"
diff --git a/package/origlang-testsuite/Cargo.toml b/package/origlang-testsuite/Cargo.toml
index f0491a9c..6b149879 100644
--- a/package/origlang-testsuite/Cargo.toml
+++ b/package/origlang-testsuite/Cargo.toml
@@ -16,4 +16,4 @@ origlang-runtime = { version = "0.1.0", path = "../origlang-runtime" }
 origlang-source-span = { version = "*", path = "../origlang-source-span" }
 origlang-parser = { path = "../origlang-parser" }
 origlang-typecheck = { path = "../origlang-typecheck" }
-thiserror = "1.0.59"
+thiserror = "2.0.0"
diff --git a/package/origlang-typecheck/Cargo.toml b/package/origlang-typecheck/Cargo.toml
index 211c7fc2..5dad7a0a 100644
--- a/package/origlang-typecheck/Cargo.toml
+++ b/package/origlang-typecheck/Cargo.toml
@@ -8,4 +8,4 @@ license = "MIT"
 origlang-typesystem-model = { path = "../origlang-typesystem-model" }
 origlang-ast = { path = "../origlang-ast" }
 log = "0.4.21"
-thiserror = "1.0.61"
+thiserror = "2.0.0"