diff --git a/Cargo.lock b/Cargo.lock
index 82a142fa..e1365e9a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -963,11 +963,10 @@ dependencies = [
 
 [[package]]
 name = "half"
-version = "2.3.1"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc52e53916c08643f1b56ec082790d1e86a32e58dc5268f897f313fbae7b4872"
+checksum = "02b4af3693f1b705df946e9fe5631932443781d0aabb423b62fcd4d73f6d2fd0"
 dependencies = [
- "cfg-if",
  "crunchy",
 ]
 
@@ -1313,6 +1312,7 @@ dependencies = [
  "clap",
  "color-eyre",
  "env_logger",
+ "is-terminal",
  "llm",
  "log",
  "num_cpus",
diff --git a/binaries/llm-cli/Cargo.toml b/binaries/llm-cli/Cargo.toml
index bb5ab08b..1cd6c34d 100644
--- a/binaries/llm-cli/Cargo.toml
+++ b/binaries/llm-cli/Cargo.toml
@@ -31,6 +31,10 @@ tracing-subscriber = {workspace = true }
 tracing = { workspace = true}
 tracing-appender = "0.2.2"
 
+# TEMPORARY: This was introduced in Rust 1.70, but our MSRV is below this.
+# Remove this once we bump our MSRV to 1.70.
+is-terminal = "0.4"
+
 [dev-dependencies]
 rusty-hook = "^0.11.2"
 
diff --git a/binaries/llm-cli/src/main.rs b/binaries/llm-cli/src/main.rs
index 73b7e061..f6377516 100644
--- a/binaries/llm-cli/src/main.rs
+++ b/binaries/llm-cli/src/main.rs
@@ -1,12 +1,13 @@
 use std::{
     convert::Infallible,
     fs::File,
-    io::{BufReader, BufWriter, IsTerminal},
+    io::{BufReader, BufWriter},
 };
 
 use clap::Parser;
 use cli_args::Args;
 use color_eyre::eyre::{self, Context, ContextCompat};
+use is_terminal::IsTerminal;
 
 mod cli_args;
 mod interactive;
diff --git a/crates/llm-base/Cargo.toml b/crates/llm-base/Cargo.toml
index 51a0949e..0216525f 100644
--- a/crates/llm-base/Cargo.toml
+++ b/crates/llm-base/Cargo.toml
@@ -21,7 +21,7 @@ thiserror = { workspace = true }
 partial_sort = "0.2.0"
 serde_bytes = "0.11"
 memmap2 = { workspace = true }
-half = "2.2.1"
+half = "=2.2.1"
 tokenizers = {version="0.13.3", default-features=false, features=["onig"]}
 regex = "1.8"
 tracing = { workspace = true }