diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -22,3 +22,18 @@
 The tests expect:
 - `/usr/share/elasticsearch/jdk/bin/java` to exist.
 - `org.elasticsearch.bootstrap.Elasticsearch` to be in java's classpath.
+
+# Caveats
+
+Currently the release 7.10.0 has a regression issue.
+
+In debian, you can pin your eleasticsearch package to install with the
+following in /etc/apt/preferences.d/elasticsearch:
+
+```
+Explanation: profile: elasticsearch
+Package: elasticsearch elasticsearch-oss
+Pin: version 7.10.0
+Pin-Priority: -1
+```
+