diff --git a/.gitmodules b/.gitmodules
index 220cb8d52..f2f505194 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,7 +4,7 @@
 [submodule "providers/flagd/test-harness"]
 	path = providers/flagd/test-harness
 	url = https://github.com/open-feature/test-harness.git
-	branch = v2.11.1
+	branch = v2.13.0
 [submodule "providers/flagd/spec"]
 	path = providers/flagd/spec
 	url = https://github.com/open-feature/spec.git
diff --git a/providers/flagd/test-harness b/providers/flagd/test-harness
index fdce98780..b62f5dbe8 160000
--- a/providers/flagd/test-harness
+++ b/providers/flagd/test-harness
@@ -1 +1 @@
-Subproject commit fdce98780f5811bd4672fb7f2b56a6be05fc46d2
+Subproject commit b62f5dbe860ecf4f36ec757dfdc0b38f7b3dec6e