diff --git a/test/data/venus.vtk.cid b/test/data/venus.vtk.cid
new file mode 100644
index 0000000..9c0f6b3
--- /dev/null
+++ b/test/data/venus.vtk.cid
@@ -0,0 +1 @@
+bafkreid5y4lgjusq3e44rsfh2vixslxbujyyzwqxd6y72jonhr6d2evm5e
diff --git a/test/data/venus.vtk.md5 b/test/data/venus.vtk.md5
deleted file mode 100644
index 1dfdbc5..0000000
--- a/test/data/venus.vtk.md5
+++ /dev/null
@@ -1 +0,0 @@
-7b2b9cddda785f4661c464366714d879