diff --git a/.gitmodules b/.gitmodules
index a1fe528..5757361 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "pymisp/tools/pdf_fonts"]
 	path = pymisp/tools/pdf_fonts
 	url = https://github.com/MISP/pdf_fonts
+[submodule "tests/viper-test-files"]
+	path = tests/viper-test-files
+	url = https://github.com/viper-framework/viper-test-files.git
diff --git a/tests/viper-test-files b/tests/viper-test-files
new file mode 160000
index 0000000..47d3c9b
--- /dev/null
+++ b/tests/viper-test-files
@@ -0,0 +1 @@
+Subproject commit 47d3c9b8d7ae69fd7a2681dd33925c055018049e