diff --git a/Project.toml b/Project.toml
index 9f457f4..2ac842b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -37,7 +37,7 @@ ReverseDiff = "1.15.3"
 SafeTestsets = "0.1, 1"
 SciMLBase = "2.54.0, 3.0"
 SciMLJacobianOperators = "0.1"
-SciMLTesting = "2.2"
+SciMLTesting = "2.1"
 StaticArraysCore = "1.4"
 Test = "1.10"
 Tracker = "0.2.35"
diff --git a/test/qa/Project.toml b/test/qa/Project.toml
index 0ef04b8..893b3ec 100644
--- a/test/qa/Project.toml
+++ b/test/qa/Project.toml
@@ -6,5 +6,5 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
 Aqua = "0.8"
-SciMLTesting = "2.2"
+SciMLTesting = "2.1"
 Test = "1.10"