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

Index: src/lib.rs
==================================================================
--- src/lib.rs
+++ src/lib.rs
@@ -317,10 +317,19 @@
         "#]
         #[must_use]
         pub fn into_inner(this: Self) -> Option<[<Id $int_name>]> {
           Arc::<[<Id $int_name>]>::into_inner(this.0)
         }
+
+
+        #[doc = r#"
+        Return the strong count of internal `Arc`.
+        "#]
+        #[must_use]
+        pub fn strong_count(&self) -> usize {
+          Arc::strong_count(&self.0)
+        }
       }
 
       impl Borrow<$int_type> for [<ArcId $int_name>] {
         fn borrow(&self) -> &$int_type {
           (*self.0).borrow()

Index: www/changelog.md
==================================================================
--- www/changelog.md
+++ www/changelog.md
@@ -2,18 +2,28 @@
 
 ⚠️  indicates a breaking change.
 
 ## [Unreleased]
 
-[Details](/vdiff?from=idbag-0.2.1&to=trunk)
+[Details](/vdiff?from=idbag-0.2.2&to=trunk)
 
 ### Added
 
 ### Changed
 
 ### Removed
 
+---
+
+## [0.2.2] - 2024-11-10
+
+[Details](/vdiff?from=idbag-0.2.1&to=idbag-0.2.2)
+
+### Added
+
+- Add `strong_count()` to `ArcId*` types.
+
 ---
 
 ## [0.2.1] - 2024-10-02
 
 [Details](/vdiff?from=idbag-0.2.0&to=idbag-0.2.1)