diff --git a/.gitmodules b/.gitmodules
index c774b2c..d063bd5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -5,7 +5,7 @@
 [submodule "providers/openfeature-provider-flagd/test-harness"]
 	path = providers/openfeature-provider-flagd/openfeature/test-harness
 	url = git@github.com:open-feature/flagd-testbed.git
-	branch = v2.2.0
+	branch = v2.5.0
 [submodule "providers/openfeature-provider-flagd/spec"]
 	path = providers/openfeature-provider-flagd/openfeature/spec
 	url = https://github.com/open-feature/spec
diff --git a/providers/openfeature-provider-flagd/openfeature/test-harness b/providers/openfeature-provider-flagd/openfeature/test-harness
index f5afee5..9d35a07 160000
--- a/providers/openfeature-provider-flagd/openfeature/test-harness
+++ b/providers/openfeature-provider-flagd/openfeature/test-harness
@@ -1 +1 @@
-Subproject commit f5afee5aa8e94bb9fc0becbb5928a5b4bd44729a
+Subproject commit 9d35a07f43c6b5e1810a5e83029aae62a5dbd494