diff --git a/Cargo.toml b/Cargo.toml
index 927900d5c8..397e8bce0e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,14 +1,3 @@
-# 'named-profiles' feature was stabilized in cargo 1.57. This line makes the
-# build work with older cargo versions.
-#
-# We have this because as of this writing, the latest cargo Debian package
-# that's available is 1.56. (Confusingly, the Debian package version number
-# is 0.57, whereas 'cargo --version' says 1.56.)
-#
-# See https://tracker.debian.org/pkg/cargo for the current status of the
-# package. When that gets updated, we can remove this.
-cargo-features = ["named-profiles"]
-
 [workspace]
 members = [
     "compute_tools",
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 7ee14a8f41..0692340147 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,10 +1,5 @@
 [toolchain]
-# We try to stick to a toolchain version that is widely available on popular distributions, so that most people
-# can use the toolchain that comes with their operating system. But if there's a feature we miss badly from a later
-# version, we can consider updating.
-# See https://tracker.debian.org/pkg/rustc for more details on Debian rustc package,
-# we use "unstable" version number as the highest version used in the project by default.
-channel = "1.62.1"
+channel = "1.66.1"
 profile = "default"
 # The default profile includes rustc, rust-std, cargo, rust-docs, rustfmt and clippy.
 # https://rust-lang.github.io/rustup/concepts/profiles.html