diff --git a/below/btrfs/Cargo.toml b/below/btrfs/Cargo.toml
index 9a50e489..449e29b4 100644
--- a/below/btrfs/Cargo.toml
+++ b/below/btrfs/Cargo.toml
@@ -19,4 +19,4 @@ rand = { version = "0.8", features = ["small_rng"] }
 rand_distr = "0.4"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
 slog = { version = "2.7", features = ["max_level_trace", "nested-values"] }
-thiserror = "1.0.64"
+thiserror = "2"
diff --git a/below/cgroupfs/Cargo.toml b/below/cgroupfs/Cargo.toml
index 5d45806c..b98a7eec 100644
--- a/below/cgroupfs/Cargo.toml
+++ b/below/cgroupfs/Cargo.toml
@@ -15,7 +15,7 @@ common = { package = "below-common", version = "0.8.1", path = "../common" }
 nix = "0.26.4"
 openat = "0.1.21"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
-thiserror = "1.0.64"
+thiserror = "2"
 
 [dev-dependencies]
 paste = "1.0.14"
diff --git a/below/ethtool/Cargo.toml b/below/ethtool/Cargo.toml
index d8985526..aa1f8705 100644
--- a/below/ethtool/Cargo.toml
+++ b/below/ethtool/Cargo.toml
@@ -12,4 +12,4 @@ license = "Apache-2.0"
 [dependencies]
 nix = "0.26.4"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
-thiserror = "1.0.64"
+thiserror = "2"
diff --git a/below/procfs/Cargo.toml b/below/procfs/Cargo.toml
index 12151e5c..07caa036 100644
--- a/below/procfs/Cargo.toml
+++ b/below/procfs/Cargo.toml
@@ -19,7 +19,7 @@ openat = "0.1.21"
 parking_lot = { version = "0.12.1", features = ["send_guard"] }
 serde = { version = "1.0.185", features = ["derive", "rc"] }
 slog = { version = "2.7", features = ["max_level_trace", "nested-values"] }
-thiserror = "1.0.64"
+thiserror = "2"
 threadpool = "1.8.1"
 
 [dev-dependencies]
diff --git a/below/resctrlfs/Cargo.toml b/below/resctrlfs/Cargo.toml
index e05467ec..ec406a7c 100644
--- a/below/resctrlfs/Cargo.toml
+++ b/below/resctrlfs/Cargo.toml
@@ -14,7 +14,7 @@ license = "Apache-2.0"
 nix = "0.26.4"
 openat = "0.1.21"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
-thiserror = "1.0.64"
+thiserror = "2"
 
 [dev-dependencies]
 maplit = "1.0"
diff --git a/below/tc/Cargo.toml b/below/tc/Cargo.toml
index 10c55dcf..c4860984 100644
--- a/below/tc/Cargo.toml
+++ b/below/tc/Cargo.toml
@@ -15,4 +15,4 @@ netlink-packet-route = "0.19.0"
 netlink-sys = "0.8.5"
 nix = "0.26.4"
 serde = { version = "1.0.185", features = ["derive", "rc"] }
-thiserror = "1.0.64"
+thiserror = "2"