diff --git a/Project.toml b/Project.toml
index 35a5f0799..640d90017 100644
--- a/Project.toml
+++ b/Project.toml
@@ -56,7 +56,7 @@ DomainSets = "0.6"
 Flux = "0.13, 0.14"
 ForwardDiff = "0.10"
 Functors = "0.4"
-Integrals = "3.1"
+Integrals = "3.1, 4"
 IntegralsCubature = "=0.2.2"
 LogDensityProblems = "2"
 Lux = "0.4, 0.5"