diff --git a/effectful-core/CHANGELOG.md b/effectful-core/CHANGELOG.md
index 27e1e89..10f65c9 100644
--- a/effectful-core/CHANGELOG.md
+++ b/effectful-core/CHANGELOG.md
@@ -1,4 +1,4 @@
-# effectful-core-2.7.1.1 (2026-08-??)
+# effectful-core-2.7.1.1 (2026-08-24)
 * Fix a performance regression introduced in 2.7.0.0 that increased the
   per-operation overhead of dynamically dispatched effects.