diff --git a/.gitmodules b/.gitmodules
index 91af80e..3b0336f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "tests/files"]
 	path = tests/files
-	url = git@github.com:Niggler/js-xlsx-testfiles.git
+	url = https://github.com/Niggler/js-xlsx-testfiles.git