diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bcf70af..6fdd8c4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -111,7 +111,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.83.0"  # STABLE
+        toolchain: "1.84"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: Check documentation
       env:
@@ -126,7 +126,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.83.0"  # STABLE
+        toolchain: "1.84"  # STABLE
         components: rustfmt
     - uses: Swatinem/rust-cache@v2
     - name: Check formatting
@@ -142,7 +142,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.83.0"  # STABLE
+        toolchain: "1.84"  # STABLE
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools
diff --git a/crates/snapbox-macros/src/lib.rs b/crates/snapbox-macros/src/lib.rs
index 6b4f1e1..adb1354 100644
--- a/crates/snapbox-macros/src/lib.rs
+++ b/crates/snapbox-macros/src/lib.rs
@@ -20,6 +20,7 @@ pub use std::eprintln;
 #[macro_export]
 macro_rules! debug {
     ($($arg:tt)*) => ({
+        #![allow(unexpected_cfgs)]  // HACK: until we upgrade the minimum anstream
         $crate::eprint!("[{:>w$}] \t", module_path!(), w = 28);
         $crate::eprintln!($($arg)*);
     })
diff --git a/crates/trycmd/src/runner.rs b/crates/trycmd/src/runner.rs
index 3f8f0ee..3f885a6 100644
--- a/crates/trycmd/src/runner.rs
+++ b/crates/trycmd/src/runner.rs
@@ -39,6 +39,7 @@ impl Runner {
         bins: &crate::BinRegistry,
         substitutions: &snapbox::Redactions,
     ) {
+        #![allow(unexpected_cfgs)] // HACK: until we upgrade the minimum anstream
         let palette = snapbox::report::Palette::color();
 
         if self.cases.is_empty() {