diff --git a/hyperactor/src/data.rs b/hyperactor/src/data.rs
index 197b1252e..84a7018db 100644
--- a/hyperactor/src/data.rs
+++ b/hyperactor/src/data.rs
@@ -131,7 +131,7 @@ impl Named for bytes::Bytes {
 #[doc(hidden)] // not part of the public API
 #[macro_export]
 macro_rules! intern_typename {
-    ($key:ty, $format_string:expr_2021, $($args:ty),+) => {
+    ($key:ty, $format_string:expr, $($args:ty),+) => {
         {
             static CACHE: std::sync::LazyLock<$crate::dashmap::DashMap<std::any::TypeId, &'static str>> =
               std::sync::LazyLock::new($crate::dashmap::DashMap::new);
diff --git a/hyperactor/src/parse.rs b/hyperactor/src/parse.rs
index 49fbec2d0..63aa72d05 100644
--- a/hyperactor/src/parse.rs
+++ b/hyperactor/src/parse.rs
@@ -104,9 +104,9 @@ impl<'a> Iterator for Lexer<'a> {
 // TODO: improve error reporting here
 macro_rules! parse {
     (
-        $token_stream:expr_2021;
+        $token_stream:expr;
         $(
-            $($pattern:pat_param)* => $constructor:expr_2021
+            $($pattern:pat_param)* => $constructor:expr
         ),* $(,)?
     ) => {
         {
diff --git a/hyperactor/src/reference.rs b/hyperactor/src/reference.rs
index be8723be8..900a1de00 100644
--- a/hyperactor/src/reference.rs
+++ b/hyperactor/src/reference.rs
@@ -253,13 +253,13 @@ macro_rules! id {
     ($world:ident) => {
         $crate::reference::WorldId(stringify!($world).to_string())
     };
-    ($world:ident [$rank:expr_2021]) => {
+    ($world:ident [$rank:expr]) => {
         $crate::reference::ProcId::Ranked(
             $crate::reference::WorldId(stringify!($world).to_string()),
             $rank,
         )
     };
-    ($world:ident [$rank:expr_2021] . $actor:ident) => {
+    ($world:ident [$rank:expr] . $actor:ident) => {
         $crate::reference::ActorId(
             $crate::reference::ProcId::Ranked(
                 $crate::reference::WorldId(stringify!($world).to_string()),
@@ -269,7 +269,7 @@ macro_rules! id {
             0,
         )
     };
-    ($world:ident [$rank:expr_2021] . $actor:ident [$pid:expr_2021]) => {
+    ($world:ident [$rank:expr] . $actor:ident [$pid:expr]) => {
         $crate::reference::ActorId(
             $crate::reference::ProcId::Ranked(
                 $crate::reference::WorldId(stringify!($world).to_string()),
@@ -285,7 +285,7 @@ macro_rules! id {
             stringify!($actor).to_string(),
         )
     };
-    ($world:ident [$rank:expr_2021] . $actor:ident [$pid:expr_2021] [$port:expr_2021]) => {
+    ($world:ident [$rank:expr] . $actor:ident [$pid:expr] [$port:expr]) => {
         $crate::reference::PortId(
             $crate::reference::ActorId(
                 $crate::reference::ProcId::Ranked(
diff --git a/hyperactor_mesh/src/actor_mesh.rs b/hyperactor_mesh/src/actor_mesh.rs
index 1bbbc5be7..f84cf9bc1 100644
--- a/hyperactor_mesh/src/actor_mesh.rs
+++ b/hyperactor_mesh/src/actor_mesh.rs
@@ -668,7 +668,7 @@ mod tests {
     // These tests are parametric over allocators.
     #[macro_export]
     macro_rules! actor_mesh_test_suite {
-        ($allocator:expr_2021) => {
+        ($allocator:expr) => {
             use std::assert_matches::assert_matches;
 
             use ndslice::extent;
diff --git a/hyperactor_mesh/src/alloc.rs b/hyperactor_mesh/src/alloc.rs
index ae44e5167..476a1b1a4 100644
--- a/hyperactor_mesh/src/alloc.rs
+++ b/hyperactor_mesh/src/alloc.rs
@@ -385,7 +385,7 @@ pub(crate) mod testing {
 
     #[macro_export]
     macro_rules! alloc_test_suite {
-        ($allocator:expr_2021) => {
+        ($allocator:expr) => {
             #[tokio::test]
             async fn test_allocator_basic() {
                 $crate::alloc::testing::test_allocator_basic($allocator).await;
diff --git a/hyperactor_mesh/src/lib.rs b/hyperactor_mesh/src/lib.rs
index 97ec5fcaa..d63a6b116 100644
--- a/hyperactor_mesh/src/lib.rs
+++ b/hyperactor_mesh/src/lib.rs
@@ -80,7 +80,7 @@ mod tests {
     use ndslice::selection::Selection;
 
     macro_rules! assert_round_trip_match {
-        ($left:expr_2021, $right:expr_2021) => {{
+        ($left:expr, $right:expr) => {{
             assert_structurally_eq!($left, $right);
             assert_round_trip!($left);
             assert_round_trip!($right);
diff --git a/hyperactor_telemetry/src/lib.rs b/hyperactor_telemetry/src/lib.rs
index 5e31f1964..c61562810 100644
--- a/hyperactor_telemetry/src/lib.rs
+++ b/hyperactor_telemetry/src/lib.rs
@@ -159,7 +159,7 @@ pub fn swap_telemetry_clock(clock: impl TelemetryClock + Send + 'static) {
 /// so MY_COUNTER.add(42, &[key_value!("key", "value")])  and MY_COUNTER.add(42, &[key_value!("key", "other_value")]) will actually bump two separete counters.
 #[macro_export]
 macro_rules! key_value {
-    ($key:expr_2021, $val:expr_2021) => {
+    ($key:expr, $val:expr) => {
         $crate::opentelemetry::KeyValue::new(
             $crate::opentelemetry::Key::new($key),
             $crate::opentelemetry::Value::from($val),
@@ -183,7 +183,7 @@ macro_rules! key_value {
 /// ```
 #[macro_export]
 macro_rules! kv_pairs {
-    ($($k:expr_2021 => $v:expr_2021),* $(,)?) => {
+    ($($k:expr => $v:expr),* $(,)?) => {
         &[$($crate::key_value!($k, $v),)*]
     };
 }
@@ -260,7 +260,7 @@ impl<'a> Drop for TimerGuard<'a> {
 /// ```
 #[macro_export]
 macro_rules! declare_static_timer {
-    ($name:ident, $key:expr_2021, $unit:path) => {
+    ($name:ident, $key:expr, $unit:path) => {
         #[doc = "a global histogram timer named: "]
         #[doc = $key]
         pub static $name: std::sync::LazyLock<$crate::Timer> = std::sync::LazyLock::new(|| {
@@ -298,7 +298,7 @@ macro_rules! declare_static_timer {
 /// ```
 #[macro_export]
 macro_rules! declare_static_counter {
-    ($name:ident, $key:expr_2021) => {
+    ($name:ident, $key:expr) => {
         #[doc = "a global counter named: "]
         #[doc = $key]
         pub static $name: std::sync::LazyLock<opentelemetry::metrics::Counter<u64>> =
@@ -329,7 +329,7 @@ macro_rules! declare_static_counter {
 /// ```
 #[macro_export]
 macro_rules! declare_static_up_down_counter {
-    ($name:ident, $key:expr_2021) => {
+    ($name:ident, $key:expr) => {
         #[doc = "a global up down counter named: "]
         #[doc = $key]
         pub static $name: std::sync::LazyLock<opentelemetry::metrics::UpDownCounter<i64>> =
@@ -364,7 +364,7 @@ macro_rules! declare_static_up_down_counter {
 /// ```
 #[macro_export]
 macro_rules! declare_static_gauge {
-    ($name:ident, $key:expr_2021) => {
+    ($name:ident, $key:expr) => {
         #[doc = "a global gauge named: "]
         #[doc = $key]
         pub static $name: std::sync::LazyLock<opentelemetry::metrics::Gauge<f64>> =
@@ -390,7 +390,7 @@ macro_rules! declare_static_gauge {
 /// ```
 #[macro_export]
 macro_rules! declare_observable_gauge {
-    ($name:ident, $key:expr_2021, $cb:expr_2021) => {
+    ($name:ident, $key:expr, $cb:expr) => {
         #[doc = "a global gauge named: "]
         #[doc = $key]
         pub static $name: std::sync::LazyLock<opentelemetry::metrics::ObservableGauge<f64>> =
@@ -425,7 +425,7 @@ macro_rules! declare_observable_gauge {
 /// ```
 #[macro_export]
 macro_rules! declare_static_histogram {
-    ($name:ident, $key:expr_2021) => {
+    ($name:ident, $key:expr) => {
         #[doc = "a global histogram named: "]
         #[doc = $key]
         pub static $name: std::sync::LazyLock<opentelemetry::metrics::Histogram<f64>> =
diff --git a/ndslice/src/reshape.rs b/ndslice/src/reshape.rs
index e9bf91a63..a14926d1d 100644
--- a/ndslice/src/reshape.rs
+++ b/ndslice/src/reshape.rs
@@ -402,7 +402,7 @@ mod tests {
     // coordinate systems.
     #[macro_export]
     macro_rules! assert_layout_preserved {
-        ($original:expr_2021, $reshaped:expr_2021) => {{
+        ($original:expr, $reshaped:expr) => {{
             // Iterate over all coordinates in the original slice.
             for coord in $original.dim_iter($original.num_dim()) {
                 let forward = to_reshaped_coord($original, &$reshaped);
diff --git a/ndslice/src/selection.rs b/ndslice/src/selection.rs
index 897c6ccfb..1e2f0a26a 100644
--- a/ndslice/src/selection.rs
+++ b/ndslice/src/selection.rs
@@ -1421,18 +1421,18 @@ where
 /// [`selection_from`]: crate::selection::selection_from
 #[macro_export]
 macro_rules! sel_from_shape {
-    ($shape:expr_2021, $label:ident = $range:expr_2021) => {
+    ($shape:expr, $label:ident = $range:expr) => {
         $crate::selection::selection_from_one($shape, stringify!($label), $range).unwrap()
     };
 
-    ($shape:expr_2021, $($label:ident = $val:literal),* $(,)?) => {
+    ($shape:expr, $($label:ident = $val:literal),* $(,)?) => {
         $crate::selection::selection_from($shape,
                                           &[
                                               $((stringify!($label), $val..$val+1)),*
                                           ]).unwrap()
     };
 
-    ($shape:expr_2021, $($label:ident = $range:expr_2021),* $(,)?) => {
+    ($shape:expr, $($label:ident = $range:expr),* $(,)?) => {
         $crate::selection::selection_from($shape, &[
             $((stringify!($label), $range)),*
         ]).unwrap()
diff --git a/ndslice/src/selection/parse.rs b/ndslice/src/selection/parse.rs
index 33042d365..8101d697a 100644
--- a/ndslice/src/selection/parse.rs
+++ b/ndslice/src/selection/parse.rs
@@ -191,7 +191,7 @@ mod tests {
 
     #[macro_export]
     macro_rules! assert_parses_to {
-        ($input:expr_2021, $expected:expr_2021) => {{
+        ($input:expr, $expected:expr) => {{
             let actual = $crate::selection::parse::tests::parse($input);
             $crate::assert_structurally_eq!($expected, actual);
         }};
diff --git a/ndslice/src/selection/routing.rs b/ndslice/src/selection/routing.rs
index f7eb38c7b..53f346892 100644
--- a/ndslice/src/selection/routing.rs
+++ b/ndslice/src/selection/routing.rs
@@ -894,7 +894,7 @@ mod tests {
     /// assert_routing_eq_with!(slice, selection, collect_routed_nodes);
     /// ```
     macro_rules! assert_routing_eq_with {
-        ($slice:expr_2021, $sel:expr_2021, $collector:expr_2021) => {{
+        ($slice:expr, $sel:expr, $collector:expr) => {{
             let sel = $sel;
             let slice = $slice.clone();
             let mut expected: Vec<_> = sel.eval(&EvalOpts::lenient(), &slice).unwrap().collect();
@@ -908,7 +908,7 @@ mod tests {
     /// Asserts that `collect_routed_nodes` matches `Selection::eval`
     /// on the given slice.
     macro_rules! assert_collect_routed_nodes_eq {
-        ($slice:expr_2021, $sel:expr_2021) => {
+        ($slice:expr, $sel:expr) => {
             assert_routing_eq_with!($slice, $sel, collect_routed_nodes)
         };
     }
@@ -916,7 +916,7 @@ mod tests {
     /// Asserts that CommActor routing delivers to the same nodes as
     /// `Selection::eval`.
     macro_rules! assert_commactor_routing_eq {
-        ($slice:expr_2021, $sel:expr_2021) => {
+        ($slice:expr, $sel:expr) => {
             assert_routing_eq_with!($slice, $sel, |s, sl| {
                 collect_commactor_routing_tree(s, sl)
                     .delivered
@@ -934,7 +934,7 @@ mod tests {
     /// (`collect_commactor_routing_tree`) against the expected output
     /// from `Selection::eval`.
     macro_rules! assert_all_routing_strategies_eq {
-        ($slice:expr_2021, $sel:expr_2021) => {
+        ($slice:expr, $sel:expr) => {
             assert_collect_routed_nodes_eq!($slice, $sel);
             assert_commactor_routing_eq!($slice, $sel);
         };
diff --git a/ndslice/src/selection/test_utils.rs b/ndslice/src/selection/test_utils.rs
index 3d5893a7c..b60e4cc95 100644
--- a/ndslice/src/selection/test_utils.rs
+++ b/ndslice/src/selection/test_utils.rs
@@ -32,7 +32,7 @@ pub fn parse(input: &str) -> Selection {
 
 #[macro_export]
 macro_rules! assert_structurally_eq {
-    ($expected:expr_2021, $actual:expr_2021) => {{
+    ($expected:expr, $actual:expr) => {{
         let expected = &$expected;
         let actual = &$actual;
         assert!(
@@ -46,7 +46,7 @@ macro_rules! assert_structurally_eq {
 
 #[macro_export]
 macro_rules! assert_round_trip {
-    ($selection:expr_2021) => {{
+    ($selection:expr) => {{
         let selection: Selection = $selection; // take ownership
         // Convert `Selection` to representation as compact
         // syntax.
diff --git a/ndslice/src/shape.rs b/ndslice/src/shape.rs
index 1583c076d..efcd90ed3 100644
--- a/ndslice/src/shape.rs
+++ b/ndslice/src/shape.rs
@@ -275,7 +275,7 @@ impl fmt::Display for Shape {
 /// ```
 #[macro_export]
 macro_rules! shape {
-    ( $( $label:ident = $size:expr_2021 ),* $(,)? ) => {
+    ( $( $label:ident = $size:expr ),* $(,)? ) => {
         {
             let mut labels = Vec::new();
             let mut sizes = Vec::new();
@@ -303,11 +303,11 @@ macro_rules! shape {
 /// ```
 #[macro_export]
 macro_rules! select {
-    ($shape:ident, $label:ident = $range:expr_2021) => {
+    ($shape:ident, $label:ident = $range:expr) => {
         $shape.select(stringify!($label), $range)
     };
 
-    ($shape:ident, $label:ident = $range:expr_2021, $($labels:ident = $ranges:expr_2021),+) => {
+    ($shape:ident, $label:ident = $range:expr, $($labels:ident = $ranges:expr),+) => {
         $shape.select(stringify!($label), $range).and_then(|shape| $crate::select!(shape, $($labels = $ranges),+))
     };
 }
diff --git a/ndslice/src/view.rs b/ndslice/src/view.rs
index bb85945ce..0e15c18e0 100644
--- a/ndslice/src/view.rs
+++ b/ndslice/src/view.rs
@@ -637,7 +637,7 @@ impl<T: Viewable> ViewExt for T {
 /// ```
 #[macro_export]
 macro_rules! extent {
-    ( $( $label:ident = $size:expr_2021 ),* $(,)? ) => {
+    ( $( $label:ident = $size:expr ),* $(,)? ) => {
         {
             let mut labels = Vec::new();
             let mut sizes = Vec::new();
diff --git a/torch-sys/src/ivalue.rs b/torch-sys/src/ivalue.rs
index 34e2217f2..76c2923f9 100644
--- a/torch-sys/src/ivalue.rs
+++ b/torch-sys/src/ivalue.rs
@@ -503,7 +503,7 @@ mod tests {
     }
 
     macro_rules! generate_py_object_roundtrip_tests {
-        ($($kind:ident, $input:expr_2021);* $(;)?) => {
+        ($($kind:ident, $input:expr);* $(;)?) => {
             paste! {
                 $(
                     #[test]
@@ -552,7 +552,7 @@ mod tests {
     }
 
     macro_rules! generate_serde_roundtrip_tests {
-        ($($kind:ident, $input:expr_2021);* $(;)?) => {
+        ($($kind:ident, $input:expr);* $(;)?) => {
             paste! {
                 $(
                     #[test]