diff --git a/ChangeLog.d/tls13-custom-config.txt b/ChangeLog.d/tls13-custom-config.txt
new file mode 100644
index 0000000..da2e25d
--- /dev/null
+++ b/ChangeLog.d/tls13-custom-config.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix undefined symbols in some builds using TLS 1.3 with a custom
+     configuration file.