diff --git a/release/RELEASE-NOTES.md b/release/RELEASE-NOTES.md
index e4083c01fb..b866f9c03b 100644
--- a/release/RELEASE-NOTES.md
+++ b/release/RELEASE-NOTES.md
@@ -10,6 +10,8 @@ If you want to jump straight in, here are two important links:
 * With pip you can use the constraints file at [https://dist.plone.org/release/6.1-dev/constraints.txt](https://dist.plone.org/release/6.1-dev/constraints.txt)
 * With Buildout you can use the versions file at [https://dist.plone.org/release/6.1-dev/versions.cfg](https://dist.plone.org/release/6.1-dev/versions.cfg), plus optionally [`versions-extra.cfg`](https://dist.plone.org/release/6.1-dev/versions-extra.cfg) and [`versions-ecosystem.cfg`](https://dist.plone.org/release/6.1-dev/versions-ecosystem.cfg).
 
+At the moment a few internal release are used that are not on PyPI, so you need some find-links, but this is arranged in `versions.cfg` and `constraints.txt`.
+
 
 ## Highlights
 
diff --git a/release/combine-constraints.py b/release/combine-constraints.py
index 85d7ab5df8..c69f95be40 100644
--- a/release/combine-constraints.py
+++ b/release/combine-constraints.py
@@ -58,6 +58,8 @@ def parse_file(filename):
 
 # Combine them.
 combi = []
+# TEMPORARILY add a find-links option:
+combi.append("-f https://dist.plone.org/release/6.1-dev/")
 for package, versions in pins.items():
     py38_version = versions.pop(38, None)
     py39_version = versions.pop(39, None)
diff --git a/release/constraints.txt b/release/constraints.txt
index 9b24eee735..70a0cd52e7 100644
--- a/release/constraints.txt
+++ b/release/constraints.txt
@@ -1,3 +1,4 @@
+-f https://dist.plone.org/release/6.1-dev/
 AccessControl==6.2
 Acquisition==5.0
 AuthEncoding==5.0