diff --git a/Project.toml b/Project.toml
index 468caee9..7b1ea719 100644
--- a/Project.toml
+++ b/Project.toml
@@ -23,6 +23,7 @@ BlockDiagonals = "0.1.7"
 ChainRulesCore = "0.9"
 Distributions = "0.24"
 FillArrays = "0.10, 0.11"
+KernelFunctions = "0.9"
 StaticArrays = "1"
 StructArrays = "0.5"
 Zygote = "0.6"