diff --git a/Project.toml b/Project.toml
index cc3541a6..e92a0864 100644
--- a/Project.toml
+++ b/Project.toml
@@ -33,7 +33,7 @@ ChainRulesTestUtils = "1"
 CommonSolve = "0.1, 0.2"
 ForwardDiff = "0.10, 1"
 IntervalRootFinding = "0.5, 0.6, 0.7"
-JET = "0.9, 0.10, 0.11"
+JET = "0.9, 0.10, 0.11, 0.12"
 JSON = "0.21, 1"
 Measurements = "2.11"
 Polynomials = "1,2,3,4"