diff --git a/tvix/Cargo.lock b/tvix/Cargo.lock
index bd8a3d864..78a6e5e7d 100644
--- a/tvix/Cargo.lock
+++ b/tvix/Cargo.lock
@@ -2507,7 +2507,7 @@ dependencies = [
  "rstest",
  "serde",
  "sha2",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tokio-listener",
  "tokio-util",
@@ -2609,7 +2609,7 @@ dependencies = [
  "serde_json",
  "sha2",
  "smol_str",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tokio-test",
  "tracing",
@@ -5013,7 +5013,7 @@ dependencies = [
  "rstest",
  "serde_json",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tokio-listener",
  "tonic",
@@ -5065,7 +5065,7 @@ dependencies = [
  "serde_tagged",
  "serde_with",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "threadpool",
  "tokio",
  "tokio-retry",
@@ -5108,7 +5108,7 @@ dependencies = [
  "rustc-hash 2.1.0",
  "rustyline",
  "smol_str",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tracing",
  "tracing-indicatif",
@@ -5154,7 +5154,7 @@ dependencies = [
  "tabwriter",
  "tempfile",
  "test-strategy",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "toml 0.6.0",
  "tvix-eval-builtin-macros",
  "vu128",
@@ -5196,7 +5196,7 @@ dependencies = [
  "sha1",
  "sha2",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tokio-tar",
  "tokio-util",
@@ -5261,7 +5261,7 @@ dependencies = [
  "sha1",
  "sha2",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tokio-listener",
  "tokio-retry",
@@ -5295,7 +5295,7 @@ dependencies = [
  "opentelemetry-semantic-conventions",
  "opentelemetry_sdk",
  "reqwest-tracing",
- "thiserror 1.0.69",
+ "thiserror 2.0.9",
  "tokio",
  "tonic",
  "tracing",
diff --git a/tvix/Cargo.nix b/tvix/Cargo.nix
index 1f4ec9891..dc379840f 100644
--- a/tvix/Cargo.nix
+++ b/tvix/Cargo.nix
@@ -7872,7 +7872,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
@@ -8261,7 +8261,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
@@ -16506,7 +16506,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
@@ -16707,7 +16707,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "threadpool";
@@ -16924,7 +16924,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
@@ -17094,7 +17094,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "toml";
@@ -17249,7 +17249,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
@@ -17514,7 +17514,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
@@ -17696,7 +17696,7 @@ rec {
           }
           {
             name = "thiserror";
-            packageId = "thiserror 1.0.69";
+            packageId = "thiserror 2.0.9";
           }
           {
             name = "tokio";
diff --git a/tvix/Cargo.toml b/tvix/Cargo.toml
index d2340fa9e..540be353b 100644
--- a/tvix/Cargo.toml
+++ b/tvix/Cargo.toml
@@ -127,7 +127,7 @@ smol_str = "0.2.2"
 tabwriter = "1.4"
 tempfile = "3.12.0"
 test-strategy = "0.2.1"
-thiserror = "1.0.63"
+thiserror = "2.0"
 threadpool = "1.8.1"
 tokio = "1.39.3"
 tokio-listener = "0.4.3"
diff --git a/tvix/eval/src/errors.rs b/tvix/eval/src/errors.rs
index 9b5384690..838187a69 100644
--- a/tvix/eval/src/errors.rs
+++ b/tvix/eval/src/errors.rs
@@ -66,7 +66,8 @@ pub enum ErrorKind {
     /// Attempted to specify an invalid key type (e.g. integer) in a
     /// dynamic attribute name.
     #[error(
-        "found attribute name '{0}' of type '{}', but attribute names must be strings",
+        "found attribute name '{}' of type '{}', but attribute names must be strings",
+        .0,
         .0.type_of()
     )]
     InvalidAttributeName(Value),
diff --git a/tvix/store/src/proto/mod.rs b/tvix/store/src/proto/mod.rs
index d9edb81f6..2ff4f3e57 100644
--- a/tvix/store/src/proto/mod.rs
+++ b/tvix/store/src/proto/mod.rs
@@ -44,7 +44,7 @@ pub enum ValidatePathInfoError {
     InvalidRootNode(DirectoryError),
 
     /// Invalid node name encountered. Root nodes in PathInfos have more strict name requirements
-    #[error("Failed to parse {} as StorePath: {1}", .0.to_str_lossy())]
+    #[error("Failed to parse {} as StorePath: {}", .0.to_str_lossy(), .1)]
     InvalidNodeName(Vec<u8>, store_path::Error),
 
     /// The digest in narinfo.nar_sha256 has an invalid len.