diff --git a/docsrc/imap/developer/developer-testing.rst b/docsrc/imap/developer/developer-testing.rst
index bb4a85e97f..d6e690ad2f 100644
--- a/docsrc/imap/developer/developer-testing.rst
+++ b/docsrc/imap/developer/developer-testing.rst
@@ -60,10 +60,6 @@ Install and configure Cassandane
         sudo cpan -i Mail::JMAPTalk
         sudo cpan -i Math::Int64
 
-   With recent perl versions ``Test::Unit::TestRunner`` cannot be installed with ``cpan``.  Download
-   the package and apply the changes from https://sources.debian.org/patches/libtest-unit-perl/0.25-7/
-   before installing it.
-
 3. Build Cassandane's binary components
 
    .. code-block:: bash