diff --git a/Project.toml b/Project.toml
index 19c4df1..d036b5b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -32,6 +32,7 @@ LaTeXStrings = "1"
 LazyArrays = "0.22"
 LinearMaps = "3"
 OffsetArrays = "1"
+Optimisers = "0.3"
 Parameters = "0.12"
 ParticleMethods = "0.1.0"
 Plots = "1"