diff --git a/Cargo.lock b/Cargo.lock
index 817c746..425b8a2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -57,17 +57,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "atty"
-version = "0.2.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
-dependencies = [
- "hermit-abi 0.1.19",
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -277,15 +266,6 @@ dependencies = [
  "unicode-segmentation",
 ]
 
-[[package]]
-name = "hermit-abi"
-version = "0.1.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "hermit-abi"
 version = "0.3.1"
@@ -355,11 +335,23 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
 dependencies = [
- "hermit-abi 0.3.1",
+ "hermit-abi",
  "libc",
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "is-terminal"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "adcf93614601c8129ddf72e2d5633df827ba6551541c6d8c59520a371475be1f"
+dependencies = [
+ "hermit-abi",
+ "io-lifetimes",
+ "rustix",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -470,9 +462,9 @@ dependencies = [
  "anyhow",
  "argh",
  "async-lsp",
- "atty",
  "codespan-reporting",
  "ide",
+ "is-terminal",
  "log",
  "lsp-types",
  "nix-interop",
diff --git a/crates/nil/Cargo.toml b/crates/nil/Cargo.toml
index dc4f061..6f26890 100644
--- a/crates/nil/Cargo.toml
+++ b/crates/nil/Cargo.toml
@@ -9,9 +9,9 @@ rust-version.workspace = true
 anyhow = "1.0.68"
 argh = "0.1.10"
 async-lsp = "0.0.4"
-atty = "0.2.14"
 codespan-reporting = "0.11.1"
 ide = { path = "../ide" }
+is-terminal = "0.4.7"
 log = "0.4.17"
 lsp-types = "0.94.0"
 nix-interop = { path = "../nix-interop" }
diff --git a/crates/nil/src/main.rs b/crates/nil/src/main.rs
index f953575..8d25dd8 100644
--- a/crates/nil/src/main.rs
+++ b/crates/nil/src/main.rs
@@ -2,6 +2,7 @@ use anyhow::{Context, Result};
 use argh::FromArgs;
 use codespan_reporting::term::termcolor::WriteColor;
 use ide::{AnalysisHost, Severity};
+use is_terminal::IsTerminal;
 use std::path::{Path, PathBuf};
 use std::sync::Arc;
 use std::{env, fs, io, process};
@@ -85,7 +86,7 @@ fn main() {
 
     setup_logger();
 
-    if !args.stdio && (atty::is(atty::Stream::Stdin) || atty::is(atty::Stream::Stdout)) {
+    if !args.stdio && (io::stdin().is_terminal() || io::stdout().is_terminal()) {
         // TODO: Make this a hard error.
         eprintln!(
             "\