diff --git a/changelog/unreleased/pull-4365 b/changelog/unreleased/pull-4365
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index 000000000..c13a80af4
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+++ b/changelog/unreleased/pull-4365
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+Change: Building restic on AIX is temporarily unsupported
+
+As the current version of the library used for the Azure backend does not
+compile on AIX, there are currently no restic builds available for AIX.
+
+https://github.com/restic/restic/pull/4365