diff --git a/documentation/Installation.txt b/documentation/Installation.txt
index f09fbc89bf6b22a6b72473ae52b40670b3632ca6..9c7ee618621763cb344349dd47a8f21a223c8661 100644
--- a/documentation/Installation.txt
+++ b/documentation/Installation.txt
@@ -44,7 +44,7 @@ Older releases can be downloaded by following the links here:
    ========= =========================== ============================
    Version   Release Notes               Known Problems
    ========= =========================== ============================
-   `2.1.13`_ :ref:`Release_Notes_2.1.13` n/a
+   `2.1.13`_ :ref:`Release_Notes_2.1.13` :ref:`Known_Problems_2.1.13`
    `2.1.12`_ :ref:`Release_Notes_2.1.12` :ref:`Known_Problems_2.1.12`
    `2.1.11`_ :ref:`Release_Notes_2.1.11` n/a
    `2.1.10`_ :ref:`Release_Notes_2.1.10` :ref:`Known_Problems_2.1.10`
diff --git a/documentation/KnownProblems.txt b/documentation/KnownProblems.txt
index 206ee98cd61f389e076446ecac9fdaf580cec08e..6f3efa0124581784835ce4167b49cc2e59caed1b 100644
--- a/documentation/KnownProblems.txt
+++ b/documentation/KnownProblems.txt
@@ -1,6 +1,17 @@
 Known Problems
 ==============
 
+.. _Known_Problems_2.1.13:
+
+Known Problems in Release 2.1.13
+--------------------------------
+
+Building the tests fails with older base releases (e.g. 3.14.8).
+A fix is available and will be part of the next release. Until then,
+see the `latest snapshot`_ or pull from the darcs repository.
+
+.. _latest snapshot: http://www-csr.bessy.de/control/SoftDist/sequencer/releases/seq-snapshot-latest.tar.gz
+
 .. _Known_Problems_2.1.12:
 
 Known Problems in Release 2.1.12