diff --git a/Cargo.toml b/Cargo.toml
index e38f932..dc5438f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ harness = false
 [dependencies]
 arrayvec = "0.7"
 bitflags = "2"
-shakmaty = "0.27"
+shakmaty = "0.27.2"
 byteorder = "1.2"
 rustc-hash = "2"
 once_cell = "1.12"
diff --git a/src/material.rs b/src/material.rs
index 75a029f..f00e46b 100644
--- a/src/material.rs
+++ b/src/material.rs
@@ -151,9 +151,9 @@ impl Material {
             .unwrap_or(0)
     }
 
-    pub(crate) fn into_flipped(self) -> Material {
+    pub(crate) fn into_swapped(self) -> Material {
         Material {
-            by_color: self.by_color.into_flipped(),
+            by_color: self.by_color.into_swapped(),
         }
     }
 
diff --git a/src/table.rs b/src/table.rs
index d191414..8d360df 100644
--- a/src/table.rs
+++ b/src/table.rs
@@ -904,7 +904,7 @@ impl<T: TableTag, S: Position + Syzygy> Table<T, S> {
                     .map(|side| {
                         let pieces = parse_pieces(&*raf, ptr, material.count(), *side)?;
                         let key = Material::from_iter(pieces.clone());
-                        ensure!(key == material || key.into_flipped() == material);
+                        ensure!(key == material || key.into_swapped() == material);
                         GroupData::new::<S>(pieces, order[side.fold_wb(0, 1)], file)
                     })
                     .collect::<ProbeResult<ArrayVec<_, 2>>>()?;
@@ -1132,7 +1132,7 @@ impl<T: TableTag, S: Position + Syzygy> Table<T, S> {
     fn encode(&self, pos: &S) -> ProbeResult<Option<(&PairsData, u64)>> {
         let key = Material::from_board(pos.board());
         let material = Material::from_iter(self.files[0].sides[0].groups.pieces.clone());
-        assert!(key == material || key == material.clone().into_flipped());
+        assert!(key == material || key == material.clone().into_swapped());
 
         let symmetric_btm = material.is_symmetric() && pos.turn().is_black();
         let black_stronger = key != material;
diff --git a/src/tablebase.rs b/src/tablebase.rs
index 952881b..ab572c0 100644
--- a/src/tablebase.rs
+++ b/src/tablebase.rs
@@ -219,7 +219,7 @@ impl<S: Position + Clone + Syzygy> Tablebase<S> {
         if let Some((path, table)) = self
             .wdl
             .get(key)
-            .or_else(|| self.wdl.get(&key.clone().into_flipped()))
+            .or_else(|| self.wdl.get(&key.clone().into_swapped()))
         {
             table
                 .get_or_try_init(|| WdlTable::new(self.filesystem.open(path)?, key))
@@ -236,7 +236,7 @@ impl<S: Position + Clone + Syzygy> Tablebase<S> {
         if let Some((path, table)) = self
             .dtz
             .get(key)
-            .or_else(|| self.dtz.get(&key.clone().into_flipped()))
+            .or_else(|| self.dtz.get(&key.clone().into_swapped()))
         {
             table
                 .get_or_try_init(|| DtzTable::new(self.filesystem.open(path)?, key))