diff --git a/README.md b/README.md
index a75e2d3..46fbc39 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,12 @@ and when building images locally and exporting the `TAG` environment variable.
 If there is no interest in using versioned images and the resulting container
 image should be tagged as `latest`, `:${TAG}` can simply be omitted.
 
+### IOCs using PVXS
+
+IOCs using the `PVXS` module to provide a `qsrv` and PVA link implementation
+must include `libevent-2.1-7` and `libevent-pthreads-2.1-7` in the
+`RUNTIME_PACKAGES`.
+
 ### areaDetector IOCs
 
 `areaDetector` IOCs must be built with target `dynamic-link`. In addition, they