diff --git a/Project.toml b/Project.toml
index ef83540..ad09279 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "FiniteVolumeMethod1D"
 uuid = "cfdabe9e-7cc8-40e3-9725-d80209c3e763"
 authors = ["Daniel VandenHeuvel <danj.vandenheuvel@gmail.com>"]
-version = "1.2.0"
+version = "1.2.1"
 
 [deps]
 CommonSolve = "38540f10-b2f7-11e9-35d8-d573e4eb0ff2"
@@ -12,7 +12,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 [compat]
 CommonSolve = "0.2"
 PrecompileTools = "1"
-SciMLBase = "2"
+SciMLBase = "2, 3.1"
 julia = "1"
 
 [extras]