diff --git a/.gitmodules b/.gitmodules
index a1c4eb9..9817909 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "demo"]
 	path = demo
 	url = https://github.com/vipqualitypost/string-demo-images
+[submodule "tests/fixtures"]
+	path = tests/fixtures
+	url = https://github.com/vipqualitypost/tono-test-data.git
diff --git a/tests/fixtures b/tests/fixtures
new file mode 160000
index 0000000..dea0f6e
--- /dev/null
+++ b/tests/fixtures
@@ -0,0 +1 @@
+Subproject commit dea0f6e00a4df88ac7c0d8a24098a6e54a8d97c0