diff --git a/IncrementalInference/Project.toml b/IncrementalInference/Project.toml
index 0515d176..1d4cdce8 100644
--- a/IncrementalInference/Project.toml
+++ b/IncrementalInference/Project.toml
@@ -96,7 +96,7 @@ Manifolds = "0.10.17, 0.11"
 ManifoldsBase = "1, 2"
 Manopt = "0.5.14"
 MetaGraphs = "0.7, 0.8"
-Optim = "1"
+Optim = "1, 2"
 OrderedCollections = "1"
 PrecompileTools = "1"
 ProgressMeter = "1"