diff --git a/.gitmodules b/.gitmodules
index bb5614c..a39c774 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,7 @@
 [submodule "flagengine/engine-test-data"]
 	path = flagengine/engine-test-data
 	url = git@github.com:Flagsmith/engine-test-data.git
-	branch = v3.10.0
+	branch = v3.12.1
 [submodule "flagengine/sdk-benchmarks"]
 	path = flagengine/sdk-benchmarks
 	url = https://github.com/Flagsmith/sdk-benchmarks.git
diff --git a/flagengine/engine-test-data b/flagengine/engine-test-data
index 2e710ea..cb06740 160000
--- a/flagengine/engine-test-data
+++ b/flagengine/engine-test-data
@@ -1 +1 @@
-Subproject commit 2e710ea7c6994110d17d1adb40b2ec2e90e7cf44
+Subproject commit cb067401093766e55c3354c1de7c73d9331334df