diff --git a/.changelog/unreleased/bug-fixes/ibc/2178-conn-ack-bug-fix.md b/.changelog/unreleased/bug-fixes/ibc/2178-conn-ack-bug-fix.md
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+++ b/.changelog/unreleased/bug-fixes/ibc/2178-conn-ack-bug-fix.md
@@ -0,0 +1,2 @@
+- fix connection id mix-up in connection acknowledgement processing
+  ([#2178](https://github.com/informalsystems/ibc-rs/issues/2178))
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