diff --git a/.gitmodules b/.gitmodules
index 0538c45..51016df 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "Flagsmith.EngineTest/EngineTestData"]
 	path = Flagsmith.EngineTest/EngineTestData
 	url = git@github.com:Flagsmith/engine-test-data.git
-	branch = v3.10.0
+	branch = v3.12.1
diff --git a/Flagsmith.EngineTest/EngineTestData b/Flagsmith.EngineTest/EngineTestData
index 2e710ea..cb06740 160000
--- a/Flagsmith.EngineTest/EngineTestData
+++ b/Flagsmith.EngineTest/EngineTestData
@@ -1 +1 @@
-Subproject commit 2e710ea7c6994110d17d1adb40b2ec2e90e7cf44
+Subproject commit cb067401093766e55c3354c1de7c73d9331334df