Index: Cargo.toml
==================================================================
--- Cargo.toml
+++ Cargo.toml
@@ -1,8 +1,8 @@
 [package]
 name = "bmap"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2021"
 license = "0BSD"
 # https://crates.io/category_slugs
 categories = [ "data-structures" ]
 keywords = [ "bitmap", "bitvec" ]

Index: src/lib.rs
==================================================================
--- src/lib.rs
+++ src/lib.rs
@@ -180,10 +180,33 @@
       *v |= bitval;
       self.remain -= 1;
     }
     Ok(())
   }
+
+  /// Set a bit, where it is assumed that the caller has validated that the
+  /// `idx` parameter is valid.
+  ///
+  /// ```
+  /// use bmap::CountedBitmap;
+  ///
+  /// let mut bmap = CountedBitmap::new(4);
+  /// unsafe { bmap.set_unchecked(2) };
+  /// assert_eq!(bmap.is_set(2).unwrap(), true);
+  /// ```
+  ///
+  /// # Safety
+  /// The caller must ensure that `idx` is within bounds.
+  #[inline]
+  pub unsafe fn set_unchecked(&mut self, idx: usize) {
+    let (iword, bitval) = self.get_bidx_unchecked(idx);
+    let v = self.bits.get_unchecked_mut(iword);
+    if *v & bitval == 0 {
+      *v |= bitval;
+      self.remain -= 1;
+    }
+  }
 
   /// Clear a bit.
   ///
   /// ```
   /// use bmap::CountedBitmap;

Index: www/changelog.md
==================================================================
--- www/changelog.md
+++ www/changelog.md
@@ -2,18 +2,28 @@
 
 ⚠️  indicates a breaking change.
 
 ## [Unreleased]
 
-[Details](/vdiff?from=bmap-0.2.1&to=trunk)
+[Details](/vdiff?from=bmap-0.2.2&to=trunk)
 
 ### Added
 
 ### Changed
 
 ### Removed
 
+---
+
+## [0.2.2] - 2024-03-21
+
+[Details](/vdiff?from=bmap-0.2.1&to=bmap-0.2.2)
+
+### Added
+
+- Added `unsafe` `CountedBitmap::set_unchecked()`.
+
 ---
 
 ## [0.2.1] - 2024-03-21
 
 [Details](/vdiff?from=bmap-0.2.0&to=bmap-0.2.1)