diff --git a/reverie-process/Cargo.toml b/reverie-process/Cargo.toml
index 69801a8..c2666a9 100644
--- a/reverie-process/Cargo.toml
+++ b/reverie-process/Cargo.toml
@@ -17,7 +17,7 @@ libc = "0.2.139"
 nix = "0.26.4"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
 syscalls = { version = "0.6.7", features = ["serde"] }
-thiserror = "1.0.64"
+thiserror = "2"
 tokio = { version = "1.41.0", features = ["full", "test-util", "tracing"] }
 
 [dev-dependencies]
diff --git a/reverie-ptrace/Cargo.toml b/reverie-ptrace/Cargo.toml
index 3a92513..0cccfee 100644
--- a/reverie-ptrace/Cargo.toml
+++ b/reverie-ptrace/Cargo.toml
@@ -27,7 +27,7 @@ raw-cpuid = "10.6.0"
 reverie = { version = "0.1.0", path = "../reverie" }
 safeptrace = { version = "0.1.0", path = "../safeptrace", features = ["memory", "notifier"] }
 serde = { version = "1.0.185", features = ["derive", "rc"] }
-thiserror = "1.0.64"
+thiserror = "2"
 tokio = { version = "1.41.0", features = ["full", "test-util", "tracing"] }
 tokio-stream = { version = "0.1.16", features = ["fs", "io-util", "net", "signal", "sync", "time"] }
 tracing = { version = "0.1.40", features = ["attributes", "valuable"] }
diff --git a/reverie/Cargo.toml b/reverie/Cargo.toml
index 3c867b8..fe16a46 100644
--- a/reverie/Cargo.toml
+++ b/reverie/Cargo.toml
@@ -27,5 +27,5 @@ reverie-process = { version = "0.1.0", path = "../reverie-process" }
 reverie-syscalls = { version = "0.1.0", path = "../reverie-syscalls" }
 serde = { version = "1.0.185", features = ["derive", "rc"] }
 syscalls = { version = "0.6.7", features = ["serde"] }
-thiserror = "1.0.64"
+thiserror = "2"
 typed-arena = "2"
diff --git a/safeptrace/Cargo.toml b/safeptrace/Cargo.toml
index b2f8d7d..fe60065 100644
--- a/safeptrace/Cargo.toml
+++ b/safeptrace/Cargo.toml
@@ -18,7 +18,7 @@ parking_lot = { version = "0.12.1", features = ["send_guard"] }
 reverie-memory = { version = "0.1.0", path = "../reverie-memory", optional = true }
 reverie-process = { version = "0.1.0", path = "../reverie-process" }
 syscalls = { version = "0.6.7", features = ["serde"] }
-thiserror = "1.0.64"
+thiserror = "2"
 
 [dev-dependencies]
 quickcheck = "1.0"