diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3871a3fc5b8af536ba8182544adc968a40fa9566..7585217c11d14941b924f7667aca338e03a3449c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
 
 # Master (will become release 2.10)
 
+- A method `BCRSMatrix::setIndicesNoSort()` was added. Similar
+  to `BCRSMatrix::setIndices()` this allows to insert all indices
+  of a row at once, but - incontrast to the latter - does not sort them.
+  This allows to speed up insertion if indices are already sorted.
+
 - `UMFPACK` is extended to arbitrary blocked matrix structures. This includes `MultiTypeBlockMatrix`. The external interface is unchanged.
   However, internally the `BCCSMatrixInitializer` is replaced by direct calls of `flatMatrixForEach` similar to `Cholmod`. This requires a
   compatible vector field of "ignored" degrees of freedom. The method `setSubMatrix` with a top-level index set is preserved for compatibility.