From 3de04a9b2878925f8307f756d66fbe528afb2e5a Mon Sep 17 00:00:00 2001
From: Lorenzo Stella <lorenzostella@gmail.com>
Date: Sun, 20 Mar 2022 16:58:45 +0100
Subject: [PATCH] Update index.md

---
 docs/src/index.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/src/index.md b/docs/src/index.md
index 185c2d6..87b95ef 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -16,6 +16,11 @@ Check out [this section](@ref problems_algorithms) for an overview of the availa
 This package works well in combination with [ProximalOperators](https://github.com/JuliaFirstOrder/ProximalOperators.jl) (>= 0.15),
 which contains a wide range of functions that can be used to express cost terms.
 
+!!! note
+
+    ProximalOperators needs to be >=0.15 in order to work with ProximalAlgorithms >=0.5.
+    Make sure to update ProximalOperators, in case you have been using versions <0.15.
+
 ## Installation
 
 Install the latest stable release with