diff --git a/.gitattributes b/.gitattributes
index a9f9a2e16448e4e6c6d0073c330b2601ba535687..e0a19a491009d8fae64a53eb5e7e3ecdeedeb94a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,2 @@
 assays/a1/dataset/1gb.txt filter=lfs diff=lfs merge=lfs -text
+assays/a1/dataset/5gb.txt filter=lfs diff=lfs merge=lfs -text
diff --git a/assays/a1/dataset/5gb.txt b/assays/a1/dataset/5gb.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f0f3524003744e5e9956e72bc23ea3d7049aea5a
--- /dev/null
+++ b/assays/a1/dataset/5gb.txt
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b3a4508d730e9916a4487a0bc512894a5f0657cd0c665927a5c7ec736c8fa1c7
+size 5073741824